All of these are obviously ridiculous and debate-ending, but I need non-Canadians to understand just how much of a non-starter line item #2 there is.
Carney does not have the power to make Quebec change its French-language laws. That is not within his jurisdiction. And if he tried to do it anyway, Canada would be immediately plunged into a country-destroying constitutional crisis. Alberta only became the province threatning to separate recently, after all. It used to be Quebec. It was kind of a big deal for a while. Canada only managed to settle down the Quebec question by giving Quebec really broad powers to control its own language rules and promising to leave them alone about it.
For Americans, this is basically the equivalent of some other country saying 'we'll only make a trade deal with you if you get rid of the 2nd Amendment'. No negotiator or president has the power to say yes to that demand, and if one did it would immediately tear the country apart. As a demand to make in a trade negotiation, it's simply absurd. Nobody who knows the first thing about Canadian politics - which one would rather hope a trade negotiator would - would ever think this is remotely feasible. This is either a demand made in bad faith to torpedo the deal, or it's simply idiotic.