I am poly virginous...haven't quite gotten to *this* point yet.
I would say, I rarely interfere or give bad information. Interactions between two people require the chemistry of two people. As an example. My ex wife was a raging lunatic bitch...I was a jackass who ignored her...together we were these people...
now...well...she is a bit stalkerish but as far as I know a normal loving person. And I am me. Very different in my interactions and how I communicate. So I could never put her down to someone, as she may be an amazing person, with THAT person.
I think the same may apply in poly.
So that poorly written example simply means to say, I would let things lie and let people make their own mistakes in relations. You never know that same couple might be a perfect tetris match in that relationship