I've already had multiple arguments on this thread about interpreting what politicians mean, it's not black and white and amateur thinkers believe their interpretations need to be contended with like facts. Even interpreting what I mean is a struggle for those who are overly sensitive about this topic. Islam gets special treatment from a lot of people, to protect and demonize, it isn't treated for what it is.
What is absolutely clear to me is that Islam can be a religion of peace and charity, promoting good values IF you meet the person who interprets Islam to be that way. That is not what Islam is but it is what Islam can be (and thus is for that person) and when Islam is fine then it's fine. Take away Islam, forget the reasoning for their beliefs and if their beliefs are within the realms of acceptability in Western society then we're 99% of the way to not caring about this person's Islam.
Assimilation means intermingling, shared language, shared core values, integration into workforce and communities. If you moved to Saudi Arabia and moved into a Dutch-neighbourhood and never learned proper Arabic or shared any values with the people living there, yeah, you're not even part of the country as far as I'm concerned.
I don't care about music or what you eat, this is where context is important because there's no value in overexaggerating how similar "Australians" and then contrasting it to Muslims. I watch anime, listen to all kinds of music but dislike generic Western music, most of my hobbies are not well regarded such as even philosophy and I disagree with people politically on a far more profound level than I disagree with peaceful interpretations of Islam.
Small cultural conclaves seem harmless but once they become large enough to be a political force and cause social problems, the lack of assimilation starts to show itself as a serious problem. Many countries in Europe have let in too many Muslims with no attempts to even look at their interpretation of Islam or assimilate them. I don't care that it's nihilistic and relativistic to a fault and just pretty careless to say they belong in the country when there's literally no assimilation going on, it's just entirely unpragmatic.
The problem specifically with Islam is that it's clear that either the religion or the culture of many Islamic countries allows for or encourages interpretations of Islam which are not within the realms of acceptability for Western values. Refugees should be helped but by trying to figure out solutions for the countries they lived in and seeing how the West can assist there. There are lots of poor and unfortunate people across the world and most of them don't carry the same religious and cultural risks as Muslims but of course, the solution to the world's problems isn't getting 0.0001% of them into Western countries.
The Australian government's job is to look after the Australian people and Australian interests and I don't see how the irresponsible acts of the German and Sweden governments and others can be explained from that perspective. The purpose of immigration shouldn't be to save people, foreign aid and being a helpful global community is important and that's where the focus should be.
As for Sharia law, if you just remove the fact that there's this thing called Sharia law and get rid of Islam. Look at what is actually being believed and forgetting why and then asking, is this something I want in the country or not. As far as I am concerned, most of Sharia law is absolutely ridiculous, anti-science, misogynistic, intolerant, 10th-century-logic nonsense and even if you decide you want to live like that, I don't see why it should be allowed. If you somehow are ignoring every bad aspect of Sharia law then I suppose I won't even ever know you follow it. It comes down to what the actual beliefs are and not the name of "Sharia law".