I wonder too. I write a very atypical brand of Java (I like to think of it as "unencumbered Java"). I sometimes even use public fields instead of accessors (o, the heresy).

My best guess would be that you often need to refactor you code to include some of the patterns showcased in the repo (factories, for instance). So developers try to future-proof their project by using those patterns everywhere. This is obviously a terrible idea.

Now for the bitchy part, why does no one ever speaks about the good sides of Java?