Who are you implying is using Québec as a test ground? The reality is simple: Québec implemented something of its own volition. Nothing nefarious here.
Given all vaccine passport programs necessarily need federal acceptance and co-ordination for them to be portable outside the province, it is a test for a program by the federal government. Few people have any exepectation that Quebec will conform to national social norms and this is why it's being used as pilot project for what appears to be a national attack on civil liberties.
"What appears to be a national attack on civil liberties"
Nice weasel words. Appears to whom?
We can't require vaccination, but we can certainly prevent unvaccinated people from entering the country. That's been the case in some parts of the world for decades.