i would say i felt similar lackluster when i interviewed (engineering position) there a few years ago. probably one of the worst interviews i've had, completely mechanical. literally all human emotion removed from it. the interview consisted of purely how well one did on the 5 sessions of solving problems. not a single session even bothered to take into account personality. the last interviewer explained they did't want to introduce any sort of bias hence the reasoning for the robotic interviews.
was pretty sad. i love search/gmail/maps but there isn't much coming out of google thats pushing the envelope these days for me.
once again the story of david and goliath... infinite growth is not sustainable...