I don't think the problem is actually as bad as it seems.
Yes - there are "camps" but most people are actually more than willing to appreciate the others - it's the vocal minority that make it seems like the "war" is much larger than it is.
Certainly most people I know are AmigaOS 4 users because I hang around AW.net and Amigans.net as well, but overall I'd say that most of the people I've come across have been genuinely happy when progress is made on AROS or MorphOS - I imagine that most people on MorphZone.net are also genuinely pleased when AmigaOS 4 shows progess (at least I hope so).
Of course there are some OS4 users who will yell at MorphOS users, but luckily I think they're the minority in the same way as the anti-OS4 brigade are a minority of MorphOS users - there's always going to be someone.
So don't give up - just realise most of the people are keeping quiet because they don't care about the bickering! The only reason I took any part in the thread was because I get so fed up of people yelling about the Sam is unusable, when I know it's not true because I use one regularly.
On the plus side, this argument has kept the news about there being two new full systems at the top spot of the forums.
All good publicity - and I for one wish to support the few remaining companies supplying us with what we need for our hobby to survive.