The lower mainland has different considerations, just like we do. It also helps that they’re the only big metro area in BC rather than us with two, dividing both political and financial capital.
At the end of the day, I’m fine with the Valley Line as is, and it might be a bit unpopular but I’m okay with low floor systems and don’t think they’re a waste. For an overglorified tramway I think it’s done a good job of avoiding the pitfalls of North American trams like Ion or Portland Max. It’s got good routes, decent speed and more importantly it’s got that 5 min peak hour reliability.