You guys hating on this are mixing LFD system with cross-realm, LFD didn’t kill server communities in WoW, it was the cross-realm stuff where you group up with random people from other realms you’re never going to see again.
Give a gamer more anonymity and the opportunity to be a kitten without it affecting their reputation and they will be a kitten.
Server LFD wouldn’t hurt anything it would only make doing dungeons more convenient and accessible, it’s not like spamming LFG in a chat window and pressing yes to join the party is social, it’s something that belongs in old MMOs when LFD systems weren’t possible and to not have it in a modern MMO is just a step back.
At the very least they could have a proper LFG interface where you flag yourself as LFG and leave a comment about your build or whatever attached to it like in FFXI.