I think the same as mixa said. L2 is not a new game, Not going so far as 15 years, but if you go to when GoD launched, there were a lot of sociabilization on the game.
At first when i reached a good level and created a clan in my old days i helped a lot, knew many people and had to listen the complains of any new player. I am a player that likes the lore of the game so i usually read what the npc text said and did many quest (most of them doesnt exisit anymore ....) Now after many years, i just log to play with my friends that still play and have some fun doing the instances in the wrong way or testing.
A lot of new people dont even think about looking the forum first or even read the quests description when they are playing.
So if I reply in game to anyone new to the game, i reply what i think is usefull. if they ask me what to do in a quest that in the description (not even the npc text) say "kill 200 mobs in harnak...." well... i will not reply. But if they have issues, cant find and npc or event ask me what someone new should do first, or have issue playing a instance for the first time, i usually help.