A significant number of users (>> 1%) reporting problems with frequent intermittent losses of power is BAD. Of the primary bike controls (acceleration, braking, turning) I'd rather lose acceleration first.. but any of those 3 basic controls are critical for safe riding.
offthegrid and I both have bikes with high mileage, we're seeing the same sort of problems. (mine cropping up in earnest around 4k miles, offthegrid around 6k miles)
As far as I know we have some of the higher mileage 2012s, we're both in southeast US, we both ride in the rain and heat.
Oobflyer may have more miles than me, he had some early issues but they may have been all resolved at this point.
Zero probably has long term test bikes with many more miles. Different climate, perhaps different usage patterns.
It's possible that a lot of 2012 owners have as many or more miles, and happy with their perfectly operational bikes and aren't being driven to bitch online : )
Maybe we should distinguish between reliability and design issues. Lack of environmental protection for BMS sensor inputs is a design flaw leading to a fault. Motors that suddenly burn up, forks that fail, battery cells that poof or vent are not necessarily design flaws but more reliability issues with select components. Aside from some leaking fork seals, I think the components in the S have been pretty solid.