Linked library has a DCMA takedown. Host this stuff outside of US corporate control.
If the model weights are able to be copyrighted, then they are also able to be a derivative work of something copyrighted, as the model is based on copyrighted works. So either the weights are infringing copyright, which means they don't belong to Meta, or the weights can't be copyrighted.
Either way, that DMCA is worthless.
So while what you say may be true the DMCA seems to have worth for these orgs because they can get code removed by the host, who is uninterested in litigating, and the repo owner likely is even less capable of litigating the DMCA.
Unfortunately as a tool of fear and legal gridlock DMCA has shown itself to be very useful to those with ill intent.