Both are brokenware when you block all 3rd party requests, but SoyceForge is even more so.
They suffer from massive as fuck SVGs on a black on white page, and it's even worse to navigate than when you allow 3rd party soy to be loaded, plus they're Cuckflared, so fuck them!

Projects hosted on a self hosted Gitea, Sourcetree, Cgit, or just Git without a web based GUI are the only way to actually be based.