Don't allow PR's from people who aren't contributors, problem solved. Closing your doors to the public is exactly how people solved the "dark forest" problem of social media and OSS was already undergoing that transition with humans authoring garbage PRs for reasons other than genuine enthusiasm. AI will only get us to the destination faster.

I don't think anything of value will be lost by choosing to not interact with the unfettered masses whom millions of AI bots now count among their number.

That would be a huge loss IMO. Anyone being able to contribute to projects is what makes open source so great. If we all put up walls, then you're basically halfway to the bad old days of closed source software reigning supreme.

Then there's the security concerns that this change would introduce. Forking a codebase is easy, but so are supply chain attacks, especially when some projects are being entirely iterated on and maintained by Claude now.