My instinct on looking at questions like this is to take a longer-term view, like historians do over decades.
As far as Chinese media is concerned, I read some of those newspapers, and sometimes it's disturbing. These are strangers in our land. Do they not really understand the way Canada works? However, those people are first generation. Their kids and their grandkids are going to wind up thinking very differently. A lot of the influence that we are so concerned about with Beijing pertains to one generation. Their kids and their grandkids are going to come around a lot more, and that's really how it's always been over the course of Chinese immigration to Canada.
As far as national security is concerned, I've read that law, and it does say that anywhere in the world, people who damage China's interest are subject to arrest. We often assume that will apply to Chinese citizens, but Mr. Ho is not a Chinese citizen; he's a Chinese Canadian. Will this eventually apply to non-Chinese people as well? I think maybe so. I don't see any impediment to that, and it's troubling.