> The only realistic risk here is for vibecoded code to be considered public domain, if too little human input was involved, but public domain is functionally equivalent to a very permissive open source license (e.g. MIT minus attribution).

I don't think that's settled. For the time being it's fair to be on the safe side.

Either way, if it irks you that they chose this stance, you can just not use Codeberg. They are not the only game in town.