Although I don't understand why you ask this on an amiga related site
Im guessing the following;
a> because there is a forum link for alternative o/s
b> because there are some bright linux-minded people posting here . on Wayne's wonderful site
c> because you're more likely to get intelligent response instead of . scorn and laughter to your questions
d> amigaone's and pegasos's have linux also
just my 2 cents for whatever its worth