I mean, I can certainly tell whether a movie is objectively good or bad while watching it, but that rarely correlates with my enjoyment of the movie. I can separate "this is really badly made/has bad writing/is a ridiculous premise" and "this is a fun distraction from the daily routine".
I kind of feel like being unable to make that separation and not being able to enjoy movies that are "bad" must be an exhausting and miserable experience.