Yeah, can't fault the man for giving up on what was essentially a hobby. He did some incredible work and I really appreciate the mods that he made but no one should get what he did considering it was all done on his free time. I would have done the same if I were in his position too. There's a real problem with entitlement and hostility in online communities.
I think, to add insult to injury, there was some issue with other modders stealing his work and not crediting him. So when you have fans yelling at you and fellow modders stealing your code, it kind of takes any shine off putting in all that blood, sweat and time. He's talented though. I hope he hasn't abandoned programming altogether because that would be a real shame.