I doubt that a significant number of such people exist. The problem is, mass murder and tyranny tend to poison the well just a little bit. Most people don’t want to read it, because it’s Lenin. Even a cookbook by Lenin would likely get a hostile reception, much less a political piece.
So, no it hasn’t “taught us something useful”, because most people won’t read it and would consider any claims made to be highly suspect due to the source. In fact, picking something written by Lenin to push a political position is counterproductive as it only hands ammunition to the people who like to equate anything even slightly left wing with Communism.
And I am surprised that I apparently actually had to explain all this.