From the context of your post or posts it sounded to me like you said you didn’t understand the mindset where you would “ want “ to love one person more than another ...ie hierarchy based poly. It seemed like you were trying to illustrate the difference in thinking in general terms of a poly person vs mono person thinking .I mean that's literally what I talked about in my other post on this thread. I suppose if one was mono you'd never have to make those contrasts nor comparisons.... except for the part where "mono" people fall in love with people who are not their (legal/committed) partners all the time.
My thought or point is dumps those 2 labels ( mono / poly ) and looks at this from a purely human behavior side. If we remove all the outside factor / entanglement/ commitments / marriage contracts and go strictly off desire and chemistry and overall compatibility probably lots of polycues or tribes would be realigned In a nesting sense. Dont you think? I know of many that have done that just because ...and the because is never super specific but rather “ fell out of love “ . And if youre being a good hinge and or being a good participanting partner in a marriage how’s that happen ? BUT it does. Is it something to fear or place in a risk assessment matrix I don’t know. Is it something to consider ...yes I think so.