I mean, for sure, if they are worried about someone building a shoddy product on top of asahi, and then not open sourcing their shoddy additions then GPL will fix their problem.

However, I think, what they want is for people to stop making those shoddy additions altogether. And open source does not solve that problem because that's exactly what open source exists to allow.

Very specifically, it was (allegedly) DDH. He's got some VC funding and all now, and is making some linux distro for MacBooks.