For a webcomic, he doesn't actually publish that many comics (they aren't on a schedule).
I don't know if I'd call them overrated. They get spread around pretty wildly when good new ones come out...but I don't see the bad ones unless I go looking (although I don't subscribe to their facebook page...I don't know why Tagut would since it is pretty well known that he holds opinions like the one Tagut was challenging him on).
For example, this one sucks. I have never seen it shared before:
But I like the ones where he picks on poor grammatical habits or praises the virtues of Tesla...and those are the ones that seem to get shared:
Are they mostly there for people who already know how to use apostrophes to circle jerk about? Yes, of course...but everybody loves a good circle jerk every now and then.