There are a few well known concentration camps in history, but those aren’t the only concentration camps we’ve seen.

Look up what the term actually means

The bit that stood out to me was

We have zero tolerance for antisemitism or the incitement of hate in any form, including false references to genocide, ethnic cleansing, Holocaust distortion

It sounds like they threw in “Holocaust distortion” as an extra thing to make their stance sound more legitimate, since otherwise it sounds awful. Why would anyone ever get in trouble for “false references to genocide, ethnic cleansing” even if we assume it was “false”