It’s a comment about who Gary Marcus is presenting himself as

My intention is for other people to think what I believe which is Gary Marcus is a hack and has no business being listened to with respect to technical evaluation of AI because he’s not technically competent enough to do. The existence of his polemics waste everybody’s time and generally waste resources like we’re wasting right now.

His entire schtick has been as the debunker in chief of claims of AI capabilities

If you actually look at his polemics they increasingly have nothing to do with his original argument because his original argument not only is flawed but is ignorant of the technical capabilities

Then disassemble the argument the author is making and show people an alternative reality based take if you want to be taken seriously.