If they studied right-wing history. Poland is actually excellent example. Ever since 1989 we had literally 3 communist books published. Every other book, even light romances and YA adventure books have to include ritual attack on communism and/or other leftism. History books, even on unrelated topics also have a lot of that. Media, all media, keep strict if informal agreement to never ever publish anything that would put left in good light.
Leftermnost voices and politicians in mainstream are neoliberal blairites. Non mainstream isn't much better, mostly few remaining trots and anarchists whose opinion very often align with US Department of State.

Point is, we live in neoliberal TINA information bubble stricter than even wettest dreams of senator McCarthy. Inside it it's very easy to have your entire worldview shaped.

And all this even before we talk about corruption and criminal genesis of entire current political class.

Most people don't study history. A lot of those that do, do want specific patterns to repeat.

Also humans don't form their political positions through knowledge and reasoning, but primarily through relationships. If everybody around you is right-wing and you want to fit in, you're going to be come right wing, rationalizing any knowledge of history you might have into supporting your right-wing position.