Human psychology doesn’t have a standard.
Monogamy is just one of a wide range of social arrangements that have existed all throughout human history, and continue to exist.
Personally, I’ve been in multiple partner relationships. Are they perfect? No, absolutely not. But neither were some of the monogamous relationships I’ve been in.
I think the comic is a little off too, and I agree with you about how it portrays cheating, but it doesn’t make sense to shit on all forms of relationship that you don’t agree with.
Passive aggressively dismissive of standard relationships
Whose standard?
They don’t hate them at all! They just steal their ideas