I think it’s quite likely they’ve learned too well about the past. If recent history (and internet-documented behavior patterns) are to be analyzed, I think it shows that people yearn for power and control over others: just look at all the karens, the reddit mods (you know which kind), the trolls, supporters of certain parties and so on.
I guess they imagine that extremist regimes will provide them with that power, without taking a moment to think “oh, wait, the chances that I’ll be the one oppressing and not the one oppressed are miniscule” (and that’s setting all other moral things aside).
It’s a scary thought, like you said.
If you’re referring to the “because you liked …” part, that’s for the post below, not for the threads. I personally haven’t come across any nazi posts, let alone like them, but it could be a circle thing, like you say