This is par for the course in the Rails community. Once some Rails devs get more experienced, they think it's ok to shit on everyone else. Granted, not all are like that...but many are. God forbid you should stumble into #RubyOnRails on IRC. Thank God for Stack Overflow!
I also think it's pretty funny/awful/ridiculous to see Rails devs hating on JS code. (JS is difficult to write well, and is NO LESS FUBAR than your average 3+year old Rails app). As recently as Rails 2.x, Rails was using Prototype... how'd that work out? For fuck's sake, how much human decency does it take to be civilized and constructive?