@becomethewaifu @LorenzoAncora Note that, even if all parts not belonging to stenzek were removed, anything deriving from those parts must also be removed, even if belonging to stenzek.
That is, unless stenzek gets permission from those authors for such relicensing.
See, this is why people may use the MIT license instead. If they want to later be able to make proprietary versions of the software, they can; they cannot do this if it's under GPL unless the copyright is fully theirs, on all code.