And the idea of fascism is newer than 1780, as you quoted. Not to mention, grassroots campaigning of this ideology across the internet is also rather new.

And summoning up the specters of fascism isn't a scare tactic. It's what happened last year in Charlottesville. White supremacists of all types had a big march. Even killed a counter-protester. Maybe you saw it? We even had a neofascist group do a march here in my local city. And right now, there's flyers espousing the "goodness" of fascism.

You can argue all you want from people from 300 years ago. I know if these people get say-so in government, I and my friends will lose rights, become disenfranchised, and possibly murdered. They say precisely that. So yeah, I do have a rather strong claim to not want fascists to take hold.