Looking at my IRC logs over the last six months I see one joke-ish comment from a fringe person that VT100 clearly must be racist as it does not support Unicode skin colour emoji merging and one core-ish member chuckling (I will not quote as I find doing so without consent to be morally questionable). This took place in a mostly technical discussion about the complexity of "improving" Unicode handling in st(1). That is it.
I have never really seen something so bad that I would argue for a ban (but that is of course a subjective judgement) and there is a line of thought that ignoring is better than trying to build a wall of rules and "feeding" the trolls by going after them. Whether this is true I am not sure, but I happily take part in both stricter and more lenient communities myself and can see advantages and disadvantages of both.
I'm so sick and tired of the woke victimism ideology, but fortunately it is crashing and burning and we'll be right back to meritocracy and focus on technology. No code of conduct is the best code of conduct! =)
How do the people at the center of the community react to this, though? If they are not condemning that sort of behavior, and possibly kicking people like that out of the community, then they are complicit at best, and tacitly approve at worst.