I was surprised how little it helped. I think it's because the pencil tip is much harder than
surface or wacom pens. There was a little chatter that pencil 2018 had more drag, but it seems
like just a rumor.
If the new Pencil has more drag compared to the previous one, I don’t feel it.
As for how little the protector helps, there is a huge difference for me, when I tried a 25% matte protector. Very similar feel surface feel to my friend’s Cintiq Pro and its pen. Either way, that’s very subjective so if you don’t like how the screen protectors feel, you don’t like it.