A tiny bit, but it never really appealed to me because I've never been heavily into the API-only version of web development - I still like building things that are mostly Jinja templates and HTML forms with a sprinkle of JavaScript.

My JSON API needs are simple enough that default Starlette handles them well.

I'm beginning to come round to the benefits of OpenAPI now which seems like a big note in FastAPI's favor, so maybe I'll give it more of a shot.