@mrsaturday See my “etc.” at the end of the non-exhaustive list or architectures.
The chan poster derided Amigas, too, if I understood him correctly. Maybe not the Commodores, given that they came from the US, but these had two things against them: they were more expensive (thus most people n Europe prefering a Spectrum or an Amstrad) and not interoperable, like the MSX, which was more of a Z80-based standard.
What I’m saying is that Commodores were for rich kids, basically. Most people didn’t have them here.