It's almost like I specifically mentioned that modern vehicles (no matter the powerplant) aren't designed to be fixed by the person driving it, and are created so that special tools/technicians are needed.

I stand by my point, EM's are far simpler and if they were designed like old cars with the owner in mind, they'd be dead simple for someone with next to zero knowledge to troubleshoot compared to the over engineered mess that internal combustion ended up as.