Too many fans seem to be blown away

It's not great by any means, but it's a pretty good movie that didn't leave me filled with regret for investing time in it.

if their story seems completely bonkers, almost like a feverish work of fiction, you ain't heard nothing yet.

It’s fine. It's literally the definition of a fine movie. You’ve seen it before, you know every beat and outcome before the characters even do. Only question is how much escapism you’re looking for.