He specifically stated in inFamous that "[he] paints the majority of gaming as the bland garbage that it is to highlight the few glittering bellydancers that rise above."
Odd choice of words aside, Yahtzee thinks a lot of games are bland and unoriginal (not that they can't also be fun- the same way that bland summer blockbusters can be fun), and his goal is to point out the flaws in current gaming so that people will learn to demand more from their games and push the medium into its new potential. He doesn't want gamers (or developers) to get complacent, because then nothing new or interesting will ever come out of the process.
Odd choice of words aside, Yahtzee thinks a lot of games are bland and unoriginal (not that they can't also be fun- the same way that bland summer blockbusters can be fun), and his goal is to point out the flaws in current gaming so that people will learn to demand more from their games and push the medium into its new potential. He doesn't want gamers (or developers) to get complacent, because then nothing new or interesting will ever come out of the process.