It doesn't matter, technical issues are utterly irrelevant to these people. "x64 is the Only Possible Future of Amiga!" is largely a mantra uttered with religious fervor and zero comprehension as a prayer to the Great God Intel, Dominator of the Market. If the PDP-8 made a sudden and inexplicable return and overthrow of the desktop market, they'd be suggesting OS4 get ported to that.
Hmm, I don't think it's so much that people are in love with Intel as it is that products which just happen to use Intel are readily available and generally inexpensive. So yes, you're right, if there was another commodity leader then people would want to target that instead. I don't see anything wrong with that. I do see something wrong in leveraging the wallets of a few pensioners "just because".