I have it on good authority (RIP Kirksaw) that umpires train specifically on watching the ball and making sure they are not influenced by the catcher. Pitch framing is a skill that shouldn't exist and shouldn't matter if the umpires were doing their jobs as trained. Good umpires largely negate pitch framing, while terrible ones, like Baker, turn it into a stat that MLB talent evaluators can't ignore.
An umpires job is to call the strike zone and if they aren't, for whatever reason, it's on them. Baker did a terrible job at what he was trained to do and it impacted the game. Arguing this and calling him out is not the same as saying our team should not try to improve our ability to exploit the crappy umpires of the league.