1. The vast majority of the games industry borrows heavily from titles which have come before, so Zynga isn't unique in this regard, nor should it be singled out.
2. The establishment of addiction-creating feedback loops is practically a games industry science. Again, this is hardly unique to Zynga.
3. Subjective statements about quality aside, I think it's safe to say that Minecraft has highly addictive qualities, and therefore Notch can't really be put on a pedestal here in the context of your second assertion.