Yeah I've noticed that, but I feel like a newbie player would right at home because Quill18 isn't too great of a player, and he's still learning too. I don't know, that's just how I felt and how learned to play EU4 actually, from Quill18.
I also learned from him. It is how I discovered him and started following his channel. Still, he is so slow paced and not that great in the game that you might want to look elsewhere if you want to watch EU4 specifically. But Quill plays a lot of different games, so one might to check him out just for that.