I have no real problem with that. I had to attend a couple of full Council meetings in Edinburgh years ago. (Ok, didn't "have to" but there were items on local issues I was interested in!)
I confess to being a bit surprised that the meeting started (not "was preceded by, but started") with a sermon and a prayer. When the representative of Heaven on Earth had finished, about a half to a third of the members came in. They presumably wanted to take no part in that superstitious rubbish. Oddly, none of the other members even thought it worthy of comment. It happened both times I was there - don't know if it still happens now.
If the folk in the Green party didn't fancy that particular item of business and felt so strongly about it, to have remained would have been hypocritical, IMO.