All airlines do this. It’s frustrating, and it has to do with playing the game with the DOT. They are punished for cancelling flights, but not delaying them, so the game is to delay rather than cancel until there is truly no option but to cancel. It’s an area of regulation that needs more work.

I am a current airline pilot, and I end up flying on all of them in order to get to and from work. Trust me, they all do this. The impact to you may be less if it’s an airline with more flights, because that airline has more options to recover and fix your experience, but they all do it.