Yes. Technically you can't mention it in game. SE's attitude towards it is if you don't say anything in game, I pretend I don't know.
Plus in that screenshot you can see that that guy was shitting on him and thus he asked him about how much DPS he dealt. Of course he would say he doesn't run a parser for if he said yes and that screenshot was forwarded to the GMs it is considered as using parser to harass another player, which will trigger an action from the GM.
I don't know about your DPS output but refer to my reply above. In any case if he does admit he is pretty much in for a potential report to GM and gets an infraction.
