My parents are rather old-fashioned
old-fashioned to the degree of not really accepting any opinions their children give because "Oh i'm the parent, I know better then you" (or at least that's the aura they give off), and my dad seeming to think any time you get into a big argument with him you're trying to challenge his authority / position as "alpha" of the family (yet again, just the aura he gives off / how quickly he snaps to yelling and cursing in your face).
Buuuut these scenarios basically never happen, so is it really that big of a deal? I could list off a whole bunch of other things that annoy me about them, but it would come off as petty.
tl;dr - Dad = 5/10, mom = 5-6/10, varies depending on the situation.