As someone who frequently watches Mort's Discovery YouTube videos, I'm not entirely blind to questionable behavior, conversations or shenanigans, and despite not wanting to join the bandwagon here, I do believe the reason given is flimsy at best. With the lack of a direct rule violation, it is no surprise a good chunk of the community gets aggravated by this sanction, since "you only logged for PvP but actually did give the absolute minimum of RP, namely engagement lines" sets a very dangerous precedent. Especially considering I haven't found any previous sanctions under Mort's name (feel free to correct me here), or a sanction with a similar reasoning.
I don't particularly care about whether any player is worth more than other players to the community or the game development. The rules apply to everyone the same, be it a PvP player, a silent trader, a moderator, admin or developer - which is why the reason for the ban is problematic, to say the least.
Low quality roleplay behavior has always been an issue. Be it about people who do just log for PvP and give not more roleplay lines than /1 and /2, silent powertraders or any other lolwutty behavior. Punishing people for doing the set minimum, however, is not encouraging people to do more. They will just stay in Connecticut and further the gap. While that obviously seems preferable for anyone who doesn't like to face dangerous PvPers, it's not what we aim for. We want people to get into the roleplay environment, behave according to the roleplay environment, and this includes people logging to provide threat.