I think it comes down to passion and lack of resources, combined with narrow-mindedness.
Some have very specific opinions on what is a "worthwhile" Amiga/ish project and they might view projects that exist outside their comfort zone as competing for resources with their ideal. The reality is, those projects are directed by people who are just as passionate about their chosen direction, so there's no competition just an alternative option.
But helping passionate and opinionated people see sense is a problem as old as humanity.
The trick is to see anything even vaguely related to "Amiga" (in the year 2010) as positive, ie; even bad news is still news. With all the passion and vitriol still floating around 15 years after the fact, at least the Amiga wont die through indifference.