Do These Ideas Have Traction Today?

Yes, yes they do.  And you can thank the Communists.

Yes, the lefties can laugh at how out-of-date that sounds.  Their ideas are still the children of communism, though:

In a previous post on Suicidalism, I identified some of the most important of the Soviet Union’s memetic weapons. Here is that list again:

• There is no truth, only competing agendas.
• All Western (and especially American) claims to moral superiority over Communism/Fascism/Islam are vitiated by the West’s history of racism and colonialism.
• There are no objective standards by which we may judge one culture to be better than another. Anyone who claims that there are such standards is an evil oppressor.
• The prosperity of the West is built on ruthless exploitation of the Third World; therefore Westerners actually deserve to be impoverished and miserable.
• Crime is the fault of society, not the individual criminal. Poor criminals are entitled to what they take. Submitting to criminal predation is more virtuous than resisting it.
• The poor are victims. Criminals are victims. And only victims are virtuous. Therefore only the poor and criminals are virtuous. (Rich people can borrow some virtue by identifying with poor people and criminals.)
• For a virtuous person, violence and war are never justified. It is always better to be a victim than to fight, or even to defend oneself. But ‘oppressed’ people are allowed to use violence anyway; they are merely reflecting the evil of their oppressors.
• When confronted with terror, the only moral course for a Westerner is to apologize for past sins, understand the terrorist’s point of view, and make concessions.

As I previously observed, if you trace any of these back far enough, you’ll find a Stalinist intellectual at the bottom. (The last two items on the list, for example, came to us courtesy of Frantz Fanon. The fourth item is the Baran-Wallerstein “world system” thesis.) Most were staples of Soviet propaganda at the same time they were being promoted by “progressives” (read: Marxists and the dupes of Marxists) within the Western intelligentsia...

Indeed, the index of Soviet success is that most of us no longer think of these memes as Communist propaganda. It takes a significant amount of digging and rethinking and remembering, even for a lifelong anti-Communist like myself, to realize that there was a time (within the lifetime of my parents) when all of these ideas would have seemed alien, absurd, and repulsive to most people — at best, the beliefs of a nutty left-wing fringe, and at worst instruments of deliberate subversion intended to destroy the American way of life...

In this context, Jeff Goldstein has written eloquently about perhaps the most long-term dangerous of these memes — the idea that rights inhere not in sovereign individuals but identity groups, and that every identity group (except the “ruling class”) has the right to suppress criticism of itself through political means up to and including violence.

And the Soviet Communists didn't even come up with mocking people for not believing in 17 genders, and compelling people to use incorrect pronouns.

Communists were (and are) a-holes, yet the modern American Left laps up their ideas and jacks those ideas up on steroids.