Regardless of sexual orientation, desires, fantasies, or judgments, the fundamental question still prevails. As a "male" having contact, incidental or otherwise, with another male (or female should the tables turn) be something YOU are comfortable with. Answering one way or the other is YOUR choice, but condoning someone that doesn't agree with your position on such a basic level question is actually how large conflicts are born. The outcomes are usually protracted and messy...and never worth the effort.
My wife and I have been swingers for many years and pretty much have experienced every form of 'contact' sexually you could imagine. While my preferences vs. her preferences sometimes don't align we are mature enough and intelligent enough to discuss the matter, compare and contrast, and reach an equitable solution. Not everything is for everyone! Rule #1.
We have always found it odd that most men will post ads on swinger sites claiming to be "straight" but after some conversation suddenly are ok with some bi-action. Someone, please tell me that DVP or DAP, which by the very nature of the act makes dicks touch, is ok because it is just WHAT? Sex? Pleasing her? You're touching cocks and guess what? That's contact! Sloppy seconds is playing in some other dude's cum but that's seemingly ok?
I'd submit that if you randomly stumble into a thread on a site that discusses sexual matters of many forms and find something that really doesn't fit your playbill, rather than run someone down maybe choose to simply step away, move on, and offer nothing. The world is already a shit show with no commercial break so why clog up the system further by bashing someone?