Poly is like playing the relationships game on hard mode.
My thoughts too - I have some friends who are in these relationships and I just do not get it. I don't want to talk anyone out of it, and if it makes them happy I'm all for it but the drama oh the drama.
Plus as you say, there's so much to try and understand before you even get to know someone in that setup.
Matched with one or two when I was using tinder and we would start talking then they'd have the spiel that was very kind of them to produce, but it also served as a mighty signal for me to not go any further.