long time ago .. going back 8 years now, when LOTRO first opened.. some doofus on the forums designated gladden as the "PVP" server... LOTRO was really meant to be a casual MMO and RP friendly MMO..
so the PVP crowd came here and some of them were always at odds with the rest (majority) of the people playing... the PVP designation attracted a lot of the dooshy types who go on and on about how great they are and how everyone else sucks .. and thus elitist immaturity and lotro-lifer mentality became cemented in Gladden's server culture...some of the new kids when coming into gladden, learned to act the same way from this minority group of veteran jerks and thus we were never able to shake the bad aftertaste since ..
so there have always been more jerks in world/glff here than other servers.. take it from me I've played on 4 servers I believe in the 3 years I played this game and all were more laid back than gladden with the exception of brandywhiners(which I believe beats gladden only because if its sheer size population wize, increasing the odds of a person running into a jerk)
so to be fair you do see a lot of jerks on the ultra populated servers as well
nimrodel and firefoot (although proly dead now) were far more laid back and chat/community friendly
best thing you can do is make fun of them then /ignore them (even if the function doesn't exist in lotro been so long don't remember).. ignoring em after coming up with a nice comeback will drive em crazy.. if you ever need help writing/formulating a TOS friendly comeback without vulgarity lemme know Ill write some down and send a .txt file, its one of my fortes.. my spécialité if you will .. you can cycle through the insults as needed to put them in their place and then continue to play with the good hearted folks (who really are the reason we play right?)