AmigaOS4 IS the legitimate direction purely because it is the only OS solution officially supported by the owners of the Amiga platform. That is why I said that this fact cannot be disputed - it can't.
No, it can't be if you want to define "legitimate" that way. But in the real world this "legitimacy" has no value except to people such as yourself who want to give it value for sentimental or other personal reasons.
Here we have an example of people making practical choices based on the realities of the situation. What does it matter what the name is? People using MorphOS feel at home as they did with their older computers, and that reality is what counts, not some external idea of "legitimacy".
-- gary_c