Well, the first part just sounds like it’s up to one’s own interpretation of “friends”. On the internet, it encompasses things from lifelong bonds to some guy you just ran into who offered/accepted your offer to go do a quest. You can’t really help it if someone doesn’t understand online social dynamics.
Likewise with the guilds, it’s the own individual’s fault if they make themselves dependent on the guild by pursuing it as their only avenue. But it’s not another person’s responsibility or place to tell a stranger who they’re supposed to associate with. If some newbie decides to only talk/play with his guildmates and nobody else, that’s not the fault of the guy who said “try joining a guild”. I’d say it’s reasonable to not expect a guild to fulfill all of my companionship needs, they’re just one resource among several that a player can draw on for such a thing.
As for the last thing, that’s not really something you can blame on anyone. If people choose not to talk, that’s on them. At most, I would blame it on the excessive bots, as you really can’t distinguish a new player from a new bot unless it’s got a gibberish name and starts shouting advertisements for RMT sites. So most people won’t bother to approach a new account and begin a conversation, but rather expect the new guy to do so, since they’re an actual human being.
Also, the problem with chatting in a dungeon lies in what you said: “stop to chat”. If you stop, you either sit there defenseless and get hammered by enemies, or you get left behind by the group and miss out on exp and loot. I tend to only chat if the group seems to be going the wrong way or if there’s a problem, but in general there is an inherent risk associated with chatting in a dungeon.
For chatting in towns, I suspect that many folks prefer to use PMs, party chat, or group chat for lengthy conversations, while shout chat is for forming parties and shitposting. Nonetheless, I’ve seen some individuals make extensive use of normal chat.
From personal experience, I’ve never seen a new player asking questions being shunned or ignored. Questions tend to get answered quickly, advice is offered, and invitations to join in questing and whatnot occur. I myself have helped guide along several new players in teaching them game mechanics, build suggestions, etc.
Lastly, with farming, it’s due to the DPK loot factor. If someone has been grinding for an item from a specific monster for an hour, and some other guy comes in and kills the mobs for 30 seconds and gets the drop from the DPK system. It’s a frustrating thing, and while people could stand to be polite in requesting that people not farm that monster, it’s understandable.