I’ve not met many poly groups but my experience was strained. First time meeting these people and the only thing they spoke about was them being poly and how much sex they were having. It was a bit odd for a first meeting with strangers. Not usual dinner conversation I felt.
Yeah, the polycules I’ve met have all been hot messes that caused a lot of pain for everyone involved (and adjacent). At least a few have this attitude of “Monogamous people are prudes and need to open up, polyamory is HoW hUmAnS sHoUlD lIvE”. Maybe it’s just bad luck, but as a result I generally keep a bit more distance with my poly friends.