with the electric only street bike I don't worry lots of oil and on road, not smashing through mud and crap. so far with electric start I only used it for restart. when you take the motors apart the metal wear from the electic start is often seen with some metal dust still held within the gears. would you fly a helecopter without all the double back up things they have (actually I don't think I would anyway).
with the bmw.....we are talking about a big company that has been around a while....ok you pull the clutch and and there is a lot of spinning, but they are you saying the revs will hack the friction plates a lot more? they seem to have achieved centring the motor very well by having the sprocket shaft also holding the motor in. Husaberg needed to get the idea when someone was fitting a motor, took a rest, had a look and said Hmmm why don't we just leave it like that?