I think a lot of authentic leftists have warped perspectives on right libertarians, likely because they don't spend any time in right libertarian spaces (the reverse is also true, but that's not important rn).
Like, there is this idea that libertarians are mostly weed liking conservatives, but honestly, based on my interactions with them it really isn't that simple.
For example many libertarians are authentically anti-bigotry. I've known many libertarians who are more socially progressive than liberals/self described progressives.