Do arguments matter?
I am talking about arguments and not data. Data is evidence. If there is evidence, then the argument is less relevant. In the case of arguments about evidence, that would be arguments about
interpretation of evidence.
Democritus proposed an atomic theory of matter thousands of years before compelling evidence of their existence was found. A theory can exist without evidence for a long time. Atoms aren't simple to detect or model. But atoms always existed despite their inaccessibility. (Although maybe they will turn out not to exist eventually, lol)
Arguments against religion are different to arguments against God or a creator deity. I would agree that religions are fatally contradictory and have limited-to-no evidence. The response by some religious people will be to deny the infallibility of a religion.
I don't see what data there is that you think rules out a creator deity or the afterlife. If data was so unequivocal, there would be no need for arguments. However, interpretation of evidence is contentious. I am not arguing here that no arguments are relevant, but that they can't equal facts. The problem with evidence is that it can be utilised unsafely in arguments.
Say, for example, a bigot said that gay people have an illness, because they are more likely to suffer depression. If homosexuality caused depression, you would have to rule out other causes
by looking for further evidence. So, for example, you could compare data on gay people living in liberal societies and those living in hostile societies. Any difference could implicate society as a cause of the depression.
So, I think that even when evidence is used in an argument, you need more evidence to prove a point. What concerns me is people going beyond the evidence in any direction. I think the value of studying arguments is looking for fallacies and not in proving something.