>A bike throttle connected to a carburetor is beautifully elegant.
it's also inefficient and wasteful.
we've gone through this revolution in cars already; the benefits don't need to be constantly stated every time -- Reduced weight, reduced mechanical wear, greater efficiencies across the board. Usually cheaper to produce and easier to partially automate production.
Yes -- things are more complicated and sometimes difficult or impossible for end users to modify or repair -- the fact of the matter is that there are less and less people interested in self repair as time goes on, so the manufacturers cater to that crowd less and cater to the higher paying crowds more.
The reality is that very few people have the knowledge for carburetor self repair -- that also happens to be true for firmware debugging and ecm modification. The specialties are just shifting.