Nintendo (or whoever) will shutdown whatever users visit to download the thing they want gone. From a skim through the user guide, Radicle seems to only handle the dev/backend side of things and Nintendo wouldn't care that much about it. After all there are already several git mirrors of Yuzu, what was lost was the official "download this" page and the centralized Github bits (issues, etc), though other projects could like handle this bit just fine either as addons (Forgejo) or natively (like the Fossil SCM).