You're right. Nuance isn't even needed to see the problem here. Two corporations, mostly one when it comes to news, has cornered the web. For a huge chunk of the population, the web is Facebook or Instagram. For them the internet is Facebook. Linking inside Facebook doesn't work like it does on the open web, in many ways. One of which is that Facebook wants to link content but not have users actually follow those links. And so there's no point talking about linking as in the open web and any nuance around it. That's why the law differentiates this:
The Act will only apply to digital news intermediaries if there is a significant bargaining power imbalance between the operators of a digital news intermediary and the news outlets producing the news content a digital news intermediary makes available.
The rest of the web like the two guys running a server, can be dealt with via the existing copyright law in Canada which is fairly permissive.