His views seem to be a product of at least two things. First, the inability of neoliberal capitalism to see what's going on around it. Second is more particularly historic, namely post Cold War ascendancy. This lead to the hubris of nrocons believing they could easily remake the world however they wanted. It also shows in the easy, and absurd, conflation of capitalism with democracy, which are obviously not the same. His book says more about the US in that area than anything to be taken seriously.

I think it is more than just distorted perception. Violence just is not a part of the average man's life anymore. Maybe Israelis, and even then, it is only the threat of violence. Ukraine is an aberration. I think the modern instruments of war preclude humans from engaging in violence in a culturally meaningful way. You could think of a handgun as a nuclear weapon at a personal scale. It's incompatible with the style of warfare that humans engaged in for the majority of their history. To say nothing of nuclear weapons! And it's very, very hard to imagine going back to less fatal forms of warfare. Your opponent would just bring a gun to the knife fight.
Then we have the monopoly on the use of force by the state. Non military citizens have to content themselves with violent ideation, of which we have many forms.

Worth pointing out that Fukuyama himself has long since repudiated the idea.