Well, he did a return a PM from me one time which had nothing to do with merchandise or the strip so I don't think he hates fans. I think he's mainly kind of self-conscious about the whole thing- I mean, it is probably absurd to go to your HS reunion or meet old freinds or worse, old relatives and explain that you draw cartoons in the internet for a living. Regardless of how good you are at it, that's gotta be occasionally tough. Then if they say "what is it" or "what is it about?" You say.....well, what do you say to your Aunt Mildred or the nice Nun who was your 5th grade art teacher?
Plus you got weirdos stalking you or your DOG on the internet. And/or in real lfe. So, yeah, what with a family and all I can see why he plays his cards pretty close to his vest. I don't think he's a sociopath, I think he's just ttying to live a normal lfe while simulatanoeusly writing and drawing funny things centering around a cat who wears a thoing, walks upright, and converses with alive stuffed animals.