the complexity of plot in most anime is extraordinary
pfft hahahhaha
If I had to link "hackers" and anime in any way, it would be around the idea that "hackers" are likely to be more used to enjoying things that their peers don't find acceptable ("you like this stuff?"). It seems reasonable that someone who freely admits that they enjoy playing with computers would similarly not feel the need to deny their enjoyment of "childish" things like cartoons.
Of course, while this may provide some evidence to a possible link between enjoying programming and enjoying Adventure Time, it doesn't explain a link between enjoying programming and enjoying glorified cartoon child pornography.
If I had to link that to programming, it would be that many programmers were ostracized around their transition to adolescence, and the desire to be a child amongst children manifested itself as pedophilia.
On a side note, did anything worth watching come out in the last year or so? I mostly watch 80s shows these days; in most media, I prefer to stick to the older stuff, since you generally only hear about things that stood the test of time that way.