Yeah it's uh, not a great sign. The defensive reading would be that the comic has always been more dialogue focused than art focused, but it's not like the dialogue is pulling the weight much these days either.
I used to think there hadn't really been a dip in quality, because frankly I don't think the art in this comic has ever gone beyond 'sufficient to deliver the dialogue', but the sad thing is that going back it clearly has gotten worse and sloppier recently.