I think you are correct. The leftist-socialists have a very strange way of thinking. They love mankind in the abstract. They love the poor, they love oppressed minorities, they love woman overburdened with raising children, they love the homeless. But they love all these unfortunates conceptually. And because they subscribe to this promiscuous philanthropy, they don't need any other virtues like fidelity to your spouse, or love to your own family, or the restraint of your appetites for sex, food, power, fame, or money. One grand abstraction trumps all the other human virtues. So if you are a Teddy Kennedy and love the poor so much, it's no big deal if you kill your mistress in a drunken stupor. Your drunkenness, your infidelity, your killing of a mistress--all can be easily ignored because you have the only virtue that matters--a flabby love of the poor and oppressed as an abstraction.
“...a flabby love of the poor and oppressed as an abstraction.”
Well put. They also pursue a love for an abstract Utopia that never has come to pass because it is out of line with the details and reality of human nature and life. That is why when they get down to trying to make their Utopia, they end up killing millions of humans for not fitting into their abstract Utopia. They tell themselves, “after we get rid of this group or that group, we will have the new socialist man who will live in Utopia with the correct thinking and behavior.” Liberals have no problem with eugenics.