I have a hard time believing an M1 with a non-science background could pick up First Aid, study a few months and then score well above the mean on Step 1. Also, some people are very intelligent and can do what you've done. There are many individuals that wouldn't be able to perform adequately in medical school with the plan you've outlined.
I do agree that physician training could be shortened (UG + MD + Residency = 11-15 years), but I also think there are some skills you learn even by cramming for exams or boards. Calling it unnecessary seems insincere.