If you’re referring to Thaler v. Perlmutter, that is not binding precedent nationwide, only in courts under the D.C. Circuit. And it only applies to “pure” AI-generated works; it did not address AI-assisted works, which seem very likely to be copyrightable.
Though here, the purpose is still served.
If I want to clone some GPL clone into a MIT license, if it ends up in the public domain because it can't be copyrighted, what do I care? I've still got the code I want without the GPL.