Let's check what the top search results are for e.g. "I believe in science". — alcontali
Is the answer just a google search away? That seems odd to me. At least it's unconvincing for myself because, supposing a google search finds me an example of scientism this would not then support the inference that scientism is widespread. It would just be an example of scientism.
But let's take your notion of scientism -- that there is only one knowledge-justification method -- and look at these examples.
Why I Don’t “Believe” in “Science”. or some years now, one of the left’s favorite tropes has been the phrase “I believe in science.” Elizabeth Warren stated it recently in a pretty typical form: “I believe in science." So what Warren really means by saying “I believe in science” is “I believe in global warming.” They use it as a way of declaring belief in a proposition which is outside their knowledge and which they do not understand. It is meant to use the reputation of “science” in general to give authority to one specific scientific claim in particular, shielding it from questioning or skepticism. In support of one particular political solution: massive government regulations. — alcontali
Believing in science, or as this person puts it, believing that global warming is a real phenomena is not the same thing as believing that there is only one knowledge-justification method. I believe that anthropocentric caused global warming is real. I also believe that there is more than one knowledge-justification method. This isn't inconsistent. So it is possible to believe a scientific thesis while at the same time not subscribing to scientism, and therefore simply stating "I believe in science" to mean "I believe global warming is real" is not evidence of scientism.
“I Believe in Science!” – Something No One Should Say. “I believe in science,” said Hillary Clinton. “We should not have people in office who do not believe in facts and truths and modern science,” said Leonardo DiCaprio.
The same analysis applies here, though with other scientific theories. These come closer to your notion of scientism because they don't express just one proposition with the phrase, but at the same time both of these persons exhibit a belief that there are more ways of knowing than science only. They are also a politician and an actor, and know how to go about their profession in those fields -- they have a knowledge of their field which is not-scientific. So I don't think that these qualify as scientism as you describe it.
What these two have in common with the general public is their misunderstanding of the nature of science. The physical sciences are not, cannot possibly be the only means of gaining knowledge. The view that science (physical sciences) is the only means of gaining knowledge about reality is called scientism – a patently false proposition. It’s an unsettling sign of an imminent idiocracy – incredibly naive statements made by public officials and laymen who increasingly believe that science is the new god – the new idol of worship and infallibility. It is a sad day when science becomes an idol of worship – a compulsory belief system with its own initiations, rites, and hymns.
I Believe in Science. It implies that I can’t be a believer in science and also believe in God. In other words, science has disproven God. Or science and God don’t go together, or science and religion are mutually exclusive. It’s strange in part because science is tasked with studying the way the natural world works and is thus not even capable of disproving something beyond its scope. So why is this such a popular view in today’s society? There are certainly also many in the scientific and academic community who propagate this view as well.
That's just a bias of the authors. "I believe in science" does not imply that the author cannot be a believer in God, even in the examples cited.
There are undoubtedly other search terms that can shed light on the world of that fake scientist religion, its media-clergy, and how the manipulative political class seeks to handsomely benefit from further deceiving the already delusional unwashed masses.
So, yes, the fake religion of scientism is incredibly widespread.
I'd say "widespread" is a large chunk of the population. It doesn't have to be a majority, but let's just say 20% of people believe in scientism is the benchmark for widespread. We can restrict our claim to, say, Europe, North America, and Australia because that's where a lot of us come from and that's the sort of culture we're trying to analyze. Now a google search might supply examples of scientism, but it does not demonstrate that 20% of the people believe that science is the only knowledge-justification method.
So how do you get from some examples of scientism to widespread?
This applies to your gathering of more search terms as well, and is a response to this:
So, yes, the fake scientism religion is literally everywhere. Wherever you find the delusional, unwashed masses, you will be able to admire the artifacts, ceremonials, and rituals of scientism. They simply believe it. They don't care that they shouldn't, because they find solace in the false promise of the omnipotence of science — alcontali
Even the quotes you supply don't say scientism religion is literally everywhere. They qualify that there are "strands of thought", or "good many scientists and some philosophers" or something along those lines. They certainly don't make claims about the "delusional, unwashed masses" -- a phrase that I don't particularly like, but hey, we all have to be the target of insults sometimes.
;)
Also I'd say that your second post is more in line with what
@Metaphysician Undercover is calling scientism, which is different from what you started out calling scientism. Would you agree with him in saying there are at least two kinds of scientism?