Earlier quoted context omitted.
About 4 years of medical school, and around 4 more years of residency training.
Most Covid patients die on respirators anyway, can a nurse do 90% of the job ("good enough") and ask a doc if the rest is needed? The other option is worse and I doubt USA can afford to have docs sitting for decades waiting for another Covid like scenario. Remember these ventilators will be produced and go in storage to wait...
This is not general purpose training - but very bounded / specific notes.
That's got to be better than exhausting more vital personnel.