I think it’s easy to gaslight yourself and think you actually might have done something seriously wrong without knowing.
True. What’s unfortunate is that the type of person who knowingly does inappropriate things (without any sense of remorse) is guaranteed to use what you say as a phony excuse. I’m not alleging that the sentiment expressed in the apology was knowingly insincere; I’m merely pointing out that this gives you zero Bayesian evidence to distinguish two very different kinds of situations.
The fact that CEA has not taken steps to clear up the ambiguities (as other commenters have pointed out) is some evidence in favor of the hypothesis that “today’s climate makes things look worse than they are”. But there are plausible alternatives for why CEA isn’t commenting on that.
Living one’s own life one would hopefully have some kind of idea. It’s a strange emphasis for an apology to say that he received access to one allegation where he didn’t initially understand why the behavior was received as problematic, only to add that there are other, unseen allegations “and that this other behavior may have been more problematic”. So were some of the things the unseen allegations could refer to problematic in his own opinion (and enough for the response by third parties to seem appropriate)?
(Using a throwaway only to avoid drama, not because I have any extra information.)