Why do Canadian YouTubers have a lot to lose? Why are their livelihoods under threat? Why specifically excluding LTT? In your linked article there's a lot of emotion but not a lot of reasons.
It is traditional broadcasters that lobbied for this bill.
The senate heard months of testimony from digital first creators who believe this bill will negatively impact them. That's why the added the UGC amendment that the government rejected.
Companies might apply reciprocal arrangements to non-Canadians, demoting the Canadian content outside Canada, to make their stance obvious. Which would mean demotion of LTT.
The former CRTC commissioner as well as the senate confirmed that user generated content is within the scope of the bill:
https://www.michaelgeist.ca/2022/11/oops-he-did-again-crtc-c...
It is traditional broadcasters that lobbied for this bill.
The senate heard months of testimony from digital first creators who believe this bill will negatively impact them. That's why the added the UGC amendment that the government rejected.