Firstly, it doesnt sound like that guy even had a parser, we dont have enough info.
Anyone can eyeball a bad player, you dont need a parser to tell you that they arent doing any damage.
Secondly why are people trying to band wagon ban people just cause the TOS updated using every clause under the sun they can get their hands on. If you need to feel and grab for that much power and control over things in a game maybe its time to look at your life.
If someones feelings get hurt oh no, ban. Sorry but no, weather the rules say its against tos or not, grow up.
Are mmorpg gamers just not capable of dealing with toxicity yourselfs anymore and need to run off to daddy GM over every stupid little thing? Please keep that back in WoW. We never did that here unless it was deserved before and theres no reason to start doing it now unless its extreme. A 2 minute whiney baby issue in a dungeon isnt worth getting banned over. If the dungeon ends and the guy starts spamming tells @ the guy non stop for 30 minutes ya sure its time for something, maybe, honestly any grown up would just black list and move on.
Bad players should not be defended.
Players that dont “know”, we should be assuming they have the potential to be good. Thats different then just being flat out bad.
As for the toxic loud mouth, or so its said he was, typically those players are indeed who show up dead last in stat results, most of the top players wont say anything at all. Even if they 100% know who.
If someone is just sitting there only doing their one combo rotation and no other skills bursts etc, ya, thats not knowing, thats bad. And any player can observe that going on without a parser. Especially in a 4 person dungeon, you have nothing else to look at but the other players, hardly any mechanics to deal with.
I dont think giving that person a commendation for playing like that is the right answer, you are sending the wrong message.