Yes, I’ve seen this view again and again, where people think that the world can simply be reduced to Barny the Dinosaur’s “sharing is caring” without ever understanding that reality simply does not work that way in the same fashion that the laws of thermodynamics work say that you can’t create energy.
The people in question aren’t evil (for the most part, though some Leftists certainly are), but merely deluded by the promise of a utopia which can be obtained “if we just try harder with better people”.
The millions dead, the trillions of dollars squandered, and the wrecked environments are blithely ignored. Those were just done by the wrong people. That’s all. Somehow, somewhere, that utopia will work, no matter the track record.
Yet, even with his innate understanding of the human condition, he fell into the trap of most progressives, believing that humanity could and would 'evolve' into something better.
Our founders knew that people were people, that individuals needed to have their behavior constrained by a moral code, and that governments needed to be constrained by the people.
Progressives believe, ultimately, that people must be ruled by benevolent dictators, but they can never seem to find quite the right guy for the job.