Personally, I also think that much of the hate which one would find e.g. on reddit or the orange site against copyleft licenses in general, and the GPL specifically was probably astroturfing from corporations for which it was just an obstacle to appropiate more work for the commons for free. The same is true, by the way for the GNU Guix project: Very few arguments against it are logical or really hold water. It is, for example, perfectly possile to publish a Guix channel for a commercial game or proprietary software - just as you can do with a docker image. And the way Guix takes care of dependencies and updates makes it probably the easiest way to do such. The reason for the hate is likely something else: That you can’t commercialise the whole ecosystem. For example, you can’t use the Guix infrastructure to promote or advertise commercial, non+free stuff.