This does not answer my question.

The quoted content said that "Lacking Copyright (or similarily a Public Domain declaration by a human), we don't receive sufficient rights grants which would permit us to include it into the aggregate body of source code, without that aggregate body becoming less free than it is now." I was explicitly asking how this meshed with my understanding of copyright, at least in the United States, which requires that a work of authorship be authored by a human and not by a machine; where a work is not authored by a human, copyright protection does not subsist, and therefore the respective work is in the public domain. And I was further asking for an explanation as to how including a work that is AI-generated (aka in the public domain) made "... that aggregate body becoming less free". Unless my understanding of copyright law and court precedent is massively off the mark, I am confused as to how less freedom is aforded in this instance.

The precedent case in the US formed a legal consensus that "AI" content can't be copyrighted, but it may also contain unlicensed/pirated IP/content.

Thus, one should not contaminate GPL/LGPL licensed source code with such content. The reason it causes problems is the legal submarines may (or may not if they settled out of court with Disney) surface at a later date, as the lawsuits and DMCA strikes hit publishers.

It doesn't mean people won't test this US legal precedent, as most won't necessarily personally suffer if a foundation gets sued out of existence for their best intentions/slop-push. =3