........ I only just want to deal with stuff that works from here on out.
And what computer OS that is capable of running lots of Amiga programs, has a small amount of, but good quality native software library, can view YouTube videos and web browse all of the sites you want to visit, and still fits into your "stuff that works from here on out" specification? If you really want an OS that "works from here on out", you can try MacOSX on your G4 MacMini, but it also has it's good and bad sides, every OS does.
Sorry you are having a bad experience with MorphOS2.7. Have you even tried to get some advice, or help from the MorphOS community? I have not seen you post any messages on MorphZone.org.
