I addressed this in the OP.I would like to add to this conversation by stating "bad" might be table chemistry too. I think we are all experienced enough to have seen a player who is terrible at one table become a good player at a different table.
I think the only one of those that matters, IMO, is commitment to the table, that is the game happening right now. Where it is an on-going campaign or a convention one shot.But if I had to state a trait that makes players or DMs bad, the discussion has to revolve around commitment. Commitment to your character, your world, and your table. If the commitment is not there, then that player/DM might be a problem.