Who's to say? It's not GitHub scale, and even if everyone in this thread moved to SourceHut, it still wouldn't be GitHub scale, but it would be serving your needs just fine. I feel totally comfortable recommending SourceHut over GitHub as a service which can be expected to have better uptime and performance, because it is a fact - even if we operate at different scales.

And I believe sr.ht would beat out GitHub at their scale anyway. The services are an order of magnitude more lightweight. And the design is more fault tolerant: we use a distributed architecture, so one part of the system can go down without affecting anything else - as if GitHub's issues could go down without anything else being affected. And many of our tools are based on email, a global fault-tolerant system, which would allow you to get your work done more or less unaffected even if SourceHut was experiencing a total outage. We'd automatically get caught back up with what you were up to in the meanwhile once we're online, too.

I've spoken to GitHub engineers about some of the internal architectural design of GitHub, too, I'm confident that SourceHut's technical design beats out GitHub's in terms of scalability. And, despite already winning by a good margin, I'm still spending a lot of effort to push the envelope further on performance and scalability.