The point of them being in Canada is that they can practice their beliefs - however archaic we see them - and through seeing the array of other cultures around them they may, perhaps, make the empowered choice to remove their burka. Or maybe not. As long as they are not violating our laws or our constitution then they can do what they want.
The hatred for Muslims in the western world is higher than it has been in more than a century and so this new found concern for women who wear burkas is based on that and not much else. Suddenly everyone is an 'expert' on Islam and what is good for these women but it's just a bunch of mainstream BS.