This is something I encounter a lot on this site, but generally on the Internet, as well.. People who are harsh and loud in their replies, get rewarded and praised as "brutally honest" or "funny" and have a lot of followers. On the contrary, those who are modest and helpful rarely get as "clout" and are often ignored or overlooked by people..
I don't know if this is an Internet phenomenon, I've noticed that in real life these people aren't that popular