The the central webUI would be key for major players adoption, and more time as well. It's been not long ago that debian, xorg, and arch (still in progress), migrated to gitlab, for example. Those migrations are expensive in people resources, and time.

And for regular individuals adoption, besides enabling the webUI, it might be way harder, unless someone contributes to sr.ht resources to allow hosting projects, with no CI support, but for free. It's hard to get individuals adoption at some cost, even if that's really a low cost, when there are alternatives, which BTW violate SW licenses, for free, :(