So they built a big building that is inconvenient/time consuming to walk through. They also designed the gates with more limited seating so that people walk around and spend money. These sound like the realities of a large airport and a business. The baggage systems not linking up sounds kinda shitty though but I'm sure that the bags still make it to their destination.
I fly from YVR to YHZ with WestJet a fair amount. I hate connecting through YYZ, the gates usually cannot be further apart. Terminal 3 seems huge and lugging my kid and all our shit from one side of it to the other up and down elevators and through the tunnel is kind of exhausting. But I've learned to plan for this and I leave plenty of time for the connection to ensure were not rushed or over stressed and have some time to relax. Given the chance I'll always connect through YYC. It ends up saving about 30mins in the air and there's usually only a minimal walk.
Flying can be a stressful and frustrating experience but I think the vast majority of it can be mitigated by the traveler if they took more than 5 minutes to plan and think about how their spending thousands of dollars and flying in a miracle of modern engineering at over 30000 feet across huge distances. If they don't take the time to consider that the connection might not be seamless or that they can't be teleported from one gate to the other than that's on them. They also have to realize that you get what you pay for and if you want to fly like "the good old days" than you can as long as you pay "good old days" prices.
/rant
YYC will be fine. WestJet is just acting indignant to make the flying public think that the airport is the bad guy(like LMD mayors "fighting" against pipelines, they know it's meaningless and they and the province have ZERO say over it but it gets votes from gullible people) and to negotiate better deals with them in the future. WestJet will move flights to wherever the money demands it.
Can we get back to talking about mythical colourful tailed airplanes