Ok. But before we stray too far into straw man territory, the cars I'm referring to which are susceptible to intermediate shaft bearing failure are Boxster, Cay

Ok. But before we stray too far into straw man territory, the cars I'm referring to which are susceptible to intermediate shaft bearing failure are Boxster, Cayman, and 911 (except Turbo, GT2, and GT3) models from 1997 to 2008. So, not Cayennes. (Not that Cayennes don't have their own problems, but then again, all cars do). Also, there may be some confirmation bias at play here. The cars you see on the road are the cars being used to ferry people around on the school run or daily commute. You aren't seeing the cars being taken for a spirited drive.