I'm not sure if it is or isn't weird that he hasn't published on complexity theory. I recall Gasarch publishing a poll in SIGACT where a handful of the researchers polled claimed that it'll be resolved by someone outside of the field.

Regardless, from reading the synopsis of the proof, I'm skeptical to the point of disinterest.

(I apologize for not providing a link -- but the only URL I was able to find from Google: http://www.cs.umd.edu/~gasarch/papers/poll.pdf is broken.)