Studies show, that 50% of men are confident that they could land a plane if provided with instructions by a pilot through radio.
Similarly, around 100% of fucking anyone in the audience are confident, that they would be able to direct a better movie if provided with the same premise.

My favourite Sam Raimi movie, and I've only really heard about it today.

Absolutely bizarre. It's downright incomprehensible to me. Megalopolis barely resembles a movie, it has more similarity to your Boomer relatives AI Memes, just amplifying personal grievances, denouncing all the times the artists tortured soul has been wronged, and of course, those dang women.
Whatever could Coppola have meant by this...