I'm torn. I think having a stated code of conduct is fine. I also think moderation is good. Works well here, as an example. But, it is done very directly here with no hiding behind process.

I get that things can be harder in other context. But will never agree with personal messages on behalf of a committee, I don't think.

And for the apologies, that is silly. Would be akin to someone getting a citation being responsible to say sorry. Ideally, you want people to feel the need to do that on their own. At young ages, it is understandable to try and teach the formalities of apologies. But, as a formal policy, it robs apologies of any real meaning.