Thank you for the clarification on what happened in Alberta and Manitoba.
Most of this is what I said though, our issue is cultural as well as political and despite STV certainly being preferable, we should not construct it as though it would actually represent eveyrone. I am a severe minority in Canada ideologically speaking, my energy is not best spent in the work to implement a voting system that would still privilege groups I am not allied with and siphon resources from groups that I am. I would benefit from STV in that smaller parties that I align more closely with would have a chance to develop some actionable politics and maybe its inability to resolve that cultural dissonance would make more people question the underlying cause of our system's failure.
If you are a liberal that subscribes to welfare liberalism, this is something you would understandably attribute more gravity to. I don't discourage its implementation, I ask people to consider the needs of people around them when they spend their energy on this before something else.