The ADL's goal is to fight anti-semitism. The Holocaust opened some people's eyes about their anti-semitism and look to a new path. But in others it simply enabled and licensed their own prejudices because it allowed them to think "Well whatever I think/say/do isn't THAT bad."
The ADL's pyramid shows that genocide doesn't happen overnight with the snap of the fingers. Each incremental step is minor and ignorable. But it starts with stereotyping and biased attitudes.
I don't know what the ADL is, but your belief in their theory is actually a political stance. It's not physics, it is a convoluted complex theory that can not be verified. Believing in it is "being on a side".
By that bar, no discussion of genocide, systemic discrimination, or individual prejudices can ever occur in any circles.
I also didn't take sides for Basecamp, I merely pointed out that the decision was in fact about politics.
Somebody said it shouldn't be done, because the end result might be genocide. That's a pretty heavy gun to bring out for a list of funny names.
Otherwise, by your logic, why not just say, "OK, we have the list, let's just all agree not to escalate it to genocide, and we can all carry on with our lives" (which would be ridiculous, because it goes without saying that jokes shouldn't be escalated to genocide)? So it won't lead to genocide, and there is no point in bringing it up.
Personally I would loath having to have such discussions at work. It's OK to consider some jokes to be in bad taste. Point it out and move on. That should be the extent of it. But not calling on some abstract higher moral framework that let's you control your colleagues.
And I am not saying it should be a general rule for companies, either. I just want companies to be allowed to set their own rules.
For all I care, there could be companies with "no jokes" policies, and people who prefer could go to work there. I would prefer the "jokes allowed" companies. I just want there to be choice. Basecamp is a little ray of hope for me, but if people prefer to have political discussions at work, I don't begrudge them for working at companies that allow them.