Don't even try to reason with him. If you look at his post count, it's mostly just blatant shitting on Diablo 3, any fun anyone tries to have in it, and any Blizzard games period. Pretty sure he's just here to express his butthurt over and over again.
Sure, I'll agree that seemingly easy fixes aren't always easy. However the amount of work on the game that still has to be done is just testemant to how much the game should not have been released. It's quite disturbing that they their excuse for not fixing things is something along the lines of, "fixes take a long time and we have a lot to do". If they had done the work that should have been done for launch, they wouldn't be struggling with fixes now.