Hi Sascha,
When I first attended a RIPE meeting, my impression was that it was a friendly and cooperative meeting of (mostly technical) people with an interest in the Internet.
By and large, I firmly believe it still is. I think the revised CoC is intended to ensure it stays that way as it grows to 800+ participants.
Things appear to have changed, these days it appears to be mostly attended by managers (some of whom used to be these erstwhile techies), all playing their corporate roles. My impression, and it may be wrong, is that one of the goals of the Diversity TF is to *change* this. A CoC offence of "unbecoming a professional" would appear to fly in the face of that goal…
I’m not sure where you got the quote marks from, as that’s not quite what I said. Not all unprofessional conduct would go against the spirit of the CoC, but things that go against the spirit of the CoC are likely to be unprofessional. Cheers, Rob