Are you referring to the second post, saying Australian med schools are all terrible and Canadian ones are awesome? I'm from the US so don't have much insight into Canadian schools, but I can say that I've seen plenty of posts here and elsewhere complaining about medical education in the US in the same way that poster complained about their Australian school experience. Maybe Canada has truly perfected preclinical medical education and the rest of the world needs to learn from them
but what I think is more likely is that the poster prefers more guided learning, whereas Australian schools (or at least my school, UQ) heavily emphasize self-guided learning. A couple other things I want to point out for UQ specifically (and I'm assuming they went to UQ because of the class size): CBL tutors from what I've seen and heard have all been practicing GPs, and there's been a heavy emphasis on clinical lecturers.
Ultimately the purpose of med school is to get you the MD, and your success in getting a residency is affected by much bigger factors than your preclinical education so I don't think all this stuff is worth worrying about too much. If your goal is to practice in Australia, then going to an Australian school makes the most sense. If you want to practice in Canada, going to a Canadian school makes the most sense but as people pointed out in that thread, that's not always feasible. Australia is a good backup option, but it is much more expensive and does limit your options in the long term.
Is this helpful, or did you have any other specific questions?