I don’t know what definition you use for “strip X of copyright” but I’d say if you can copy something openly and nobody does anything against it, you are stripping it’s copyright.

Just what was stated in the fucking article

By incorporating copyleft data into their models, the LLMs do share the work - but not alike. Instead, the AI strips the work of its provenance and transforms it to be copyright free.

That's bullshit.