I haven’t seen AC forecast a schedule that mirrors their pre-covid schedule yet for the immediate future and go as far to sell tickets. But ya, AC isn’t exactly innocent either. There are for sure cancellations/schedule changes at AC but not in same overzealous attempts of Westjet (heck even the other small charter airlines like TS & WG aren’t even doing that and are buying seats for their passengers aboard WS/AC metal). Also, AC has a much larger network that alone gives them the security of selling extra seats/forecast profitable flights (example: their monopoly on smaller feeder routes within Canada and with Star Alliance).
The “due to covid” thing is such a blanket statement. It’s like “calling in sick” at work can have a million reasons behind it- truthful or not. In WS case, yes they can’t fill the demand of their pre-pandemic schedule “due to covid”. Take that as you will lol
Edit: for clarity