I think part of the negativity is based on the fact that the majority of things promised in the Amiga world don't make it to reality and the few that do take forever to get there. It also has to do with our dwindling numbers being split in yet another direction.
Using the best of assumptions it will be years before a usable ARIX emerges and in the mean time the horizon that is modern computing becomes further and further away. I look at Haiku OS, it would have been great to have had it five years ago, but today they have yet to provide a usable image and the OS just feels old. AROS too, feels limited too, it's CLI limited compared to a BASH shell and it really still is unable to deal with the real world of MP3 players, Smart Phones and the internet in a comfortable way.
In an age when I can boot off my pen drive is the ability to call it "Sys:" really all that important?