Not allowed for this route anyway. They could reduce SEA/SFO or any of the new service aside from MEX/HAV. They have zero flexibility with the MEX slots so it is pointless to argue that not flying these would somehow make things better for Horizon.

Small cities have been losing air service for the last two decades and will continue to do so. AS knows this and given that there is so little competition on those routes, people either take whatever AS gives them, support a competitor, drive, or move to a bigger city. AS created the mess with Horizon and at this point passengers should be aware that flights will be cancelled/delayed. Choosing to continue to support AS knowing this is like pounding one's head against the wall and complaining about having a headache.