I think a rough idea of how moderators tolerate language/racism issues (my opinion, because this is referring to an issue we're allowed to make judgement calls on):
If you're posting screenies of an event that happened in game, it should be ok. Obviously subject to moderating if it's intentional just to get banned topics onto the forums and etc. But we don't intend to censor events that happened within the game. Darworth's post is a good example.
If you're posting links to sites that contain the banned subjects, moderator discretion will have to be used as the the intent of such a link. If Darworth was using racist terms constantly in his secondary site I might have had to intervene in some way. Ablist terms are not censored, and as such terms referring to mental capacity are tolerated, if not exactly endorsed.
If you're using the words in text, in your sig, etc it is definitely not ok.