I see that as the reason. They got in early/early enough on something that they have a vested interest in hyping. Also, this is a passionate early adopter market, don't expect a lot of rational behaviour :  )

You'll see the same things at small cap trading forums. Everyone likes to root for their underdog. If I had  a massive wallet of BTC, I'd be pretty well occupied taking down critism as well, as that reduces the long term value of my Btc.

Here, as in all places, it's best to ignore the trolls and carry ever on with reasoned exchanges.