In the case you've seen a lot of Fassbinder's films, this is worth a shot. You will definitely not be bored, so there's that. The film can be abrasive and there really aren't any likable characters. If you don't like that kind of stuff then avoid this. I can't blame you. I hated the first hour, then I reluctantly started respecting it, realizing that it was a satire and black comedy not a straight drama, pi**ing on the myth of the artistic genius and the wide berth we grant them (or did before the Me Too movement).
This protagonist actually reminded me a lot Pablo Picasso, a notorious wife-beater and all around jerk. Of course no would pay to see their sacred cows brought down a peg, so we have stand-ins like this guy. But the critique still works.
It's a biographical film, but not of the typical hacky kind that every director seems to make. Fassbinder had undoubtedly seen a lot of sycophants and brainless hangers-on in his life, self-aware enough to sense how full of **** people were when they were in the presence of a celebrity, knowing that he really could only trust a few people, compelled to "develop" and chronically produce or become irrelevant. Fassbinder would know. He died after making forty films in a decade, his heart exploding from too much coke.