>>88767735He is a terrible writer, very much so with comedy. The fact is that some people just aren't very funny, I don't think it's something that he will ever get good at.
As an artist, he has improved a ton, but even back in the day his art outside of the comic wasn't bad, he was just very lazy and used stock assets and terribly flat faces.
He basically only got popular because he was so early and rode the penny arcade train, if his comic started today, even in its current form, it would never gain any traction.