Clutches are failing if there is heavy use of Turbo mode, specifically switching between Trail/Turbo on singletrack climbs. From what I have seen, Specialized has instituted a running change quietly. A lot of my friends replaced their motors early on and now have zero issues after replacement.
Of course they will say it wont take long. They just want the sale.
I have a friend who bought an etrike from Honda stealership, months and months and more months. A simple crash he said. With diy components might be a one month wait for slow boat from china to come.