"There is actually an exception to what you note in the Muslim community in Canada. An increase in conservatism, and those self-identifying as "religious"."

Are they?  If we're measuring opinions in a sub-culture that's seeing ongoing immigration, and the pot is getting larger and larger each year, it seems to me there's two possibilities:

a) The percentage of those who say they are conservative and traditionalist is going up because we're adding more conservatives and traditionalists from the old country over time, and we're adding them faster than acculturation is removing them on a generational scale. This is just a flow rate issue, and those recent immigrants will acculturate like the rest, even if there's a lot of them coming in and those numbers are affecting polls. Islam is still a TINY minority of our population.

b) The local communities are fostering bubbles and both the recent immigrants AND the older immigrants are crystalizing around their sub-culture. This is a concern.