Old lfg was full of bots posting for trials carries. Mods used to spend all day every day banning these bots to not make any difference. I would post for divinity runs and would get at least one DM from a trials carry bot every time. The current fireteam finder could be modified to allow custom text for verified accounts with over a certain amount of experience(raid/dungeon clears, triumph score, etc). The main obstacle here is Bungie does not want custom text in-game that underage players may see. Of course, minors should not be allowed to use fireteam finder but whatever.