It was interesting to read elsewhere about the rudeness involved in bumping players--I've been bumped when I joined a table with no explanation given. No big deal. Life is too short to make mountains out of molehills.
It seems to me the most frequently abused aspect is to leave a hand during the play or after dummy comes down revealing an awful contract.
Perhaps many players simply DON't know what the guidelines are. They see inappropriate behavior and mimic it later on.
My suggestion is to place one etiquette tip per day at the top of the NEWS box or elsewhere on the "Lobby Page" perhaps as a streamer. New tips could be periodically rotated. I don't think etiquette is going to just happen unless we actively encourage and promote it.
Hope this helps.

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