> One thing to note about it is tiangolo is pretty content to maintain singular control over his projects which means the project only really advances when he has the time or interest to work on that specific project.

Yes, he recently responded to some criticism of this basically saying that he has no real intention to increase the bus factor or permit more community control to his projects, which is obviously his right, but is also something that people should consider when deciding whether or not to go with them.

Interesting, thanks. I hadn't thought of that aspect.