This is the best explanation available for why the "black budget" grows ever larger. Who would dare vote against that? Maybe an angel? Maybe someone so obviously corrupt and disgusting that additional proof of those qualities wouldn't surprise any voter.... hmmmm.
Isn't the problem hypocrisy rather than group sex? You can perfectly legally have group sex in the UK (if all participants are legally consenting), the people most likely to object are those who think they're in a trusting monogamous/monoandrous relationship with one of the participants.
The primary reasons people can be blackmailed seem to be because they've not been forthright, or, they themselves perceive it as wrong.
I'd extend that to hypocrisy and/or dishonesty, and yes those are valid objections (IMO the only ones), but my problem is the apparent view that the act alone is socially reprehensible, not the secondary issues of being two-faced, or going behind your partner's back without their knowledge.
So yes I completely agree with you, once those 2 issues have been teased apart. The GP comment with "obviously corrupt and disgusting" was objectionable. TBF looking at other comments I see little or none of that.