Earlier quoted context omitted.
Yet every yokel with a garage, builds an ICE car for fun. Not even college educated. Some disconnect here?
Plenty of people buid airplanes and helicopters too.. Established templates and parts compatibility make it possible for people without a great deal of engineering knowledge but a high level of technical skill (which apparently many yokels posess) to build things. Building an ice vs electric vehicle in the discussion context means design plus build, not a kit or retrofit. It's a bit different.
Note that in 1900 the electric car was also seen as viable and people were building it. For "reasons" the ICE took off, while the electric car remained as mostly a thing people did in their garage.