> I started using "doom" with the blizzard accelerator card
> on my A1200 over 30 years ago

I doubt that. ADoom was released in December 1997, a few days after the source code release. ADoomPPC followed in March 1998, so 24 years ago.

> still today all the same ports of similar programs continue to be repeated.

New open source engines for older (but recentish compared to Doom/Quake) games are constantly emerging. Main problem (beside endianness issues, lack of support libs and lack of CPU grunt) is that they require newer OpenGL standards with shaders and stuff, which MorphOS lacks.

> It is clear that with a ryzen 3600 you can do other ports of recent software.

You'd still need modernized graphics support. This doesn't emerge magically by running MorphOS on x64/AMD64 CPUs.