Fast.ai really democratizes the bleeding edge research for the masses, though, that’s why it’s popular among outcasts and outsiders. In general, I would be more wary of people working within closed environments and organizations than people making all they do public and open to review.
fastai is popular among practitioners as well as many researchers rather than just outsiders or outcasts. I've personally learned from it a lot and is amazing contribution. However, there is still a large population that is still unaware and it would be great to have a quick intro paragraph in readme so they know what all the fuzz is about.