Except that pugging dungeons is not any more social now without LFD, it really never was. And that’s what we’re talking about, if you are doing dungeons now with friends/guildies LFD doesn’t in any way change that.
It’s totally fair for someone to say “I don’t like LFD” or “most people will switch to LFD over chat”. Sure great, fabrication is pretending that that damages the social atmosphere or that LFD groups just treat people like NPC’s.