Where does PP say you'll have to send in your government ID?
That's the proposal from the Conservative backbencher that spawned this whole thing. The other option is some sort of GoC digital ID you would have to provide, which is even more Orwellian. That would be phenomenal tracking tool that can be used by the government directly to better correlate your digital footprint as well as another data point for advertising and data aggregation people (Google etc) for legal purposes or for data theft people for social engineering, and also gives another big juicy hacking target for the database that would be behind it. Another weird dichotomy from a party that is for small government and doesn't think public servants are competent but wants to get right up in people personal shit with a solution that would require a big government footprint and let them track you directly.
It's a terrible idea from a data security point of view, probably totally unenforceable for non-Canadian hosted sites anyway, and also super easy to bypass by using a VPN to change your IP address to a different country code. Those take a few minutes to set up and are dead simple to use, and have a lot of legitimate uses.
The only people it would actually impact are non-technologically savvy people, which probably aren't too many in the under 18 crowd (who may also have access to things like fake IDs or use their parents as another easy way to bypass this). I'm sure there would be a bunch of stolen identities, black mail threats, and other opportunities for the criminally enterprising. Folks might not like porn (particularly in the so-con circles that forms a large part of his base) but it is legal, so their not liking it doesn't mean adults can't enjoy it., and is a bit of a stealth imposition of puritan beliefs on others under a false flag (which again, on the other foot is a 'left wing agenda by wokists' or whatever when the other side is doing it).
'BUT WHAT ABOUT THE CHILDREN" is one of the stupidest tropes in politics, but in this case I agree with Trudeau (ugh) that it's a really dumb solution to manufactured problem. If they are actually concerned tools like installing parental controls on digital devices are probably more effective, but still not foolproof. If they wanted to do slightly more than nothing, the concerned parents could just actually try parenting. For the concerned people that aren't the actual parents, they could maybe just mind their own business.
This is a good 15 second soundbyte type idea that quickly turns into a really stupid idea if you think about it for a minute.