It’s not clear if there is a shortage of doctors in the aggregate. And it’s hard to suss out because the US has large numbers of foreign trained doctors who practice medicine here (chicken/egg?) AND we export med students to offshore med schools (most of whom return, some do not) AND of course because even though a pediatrician and a neurosurgeon are both MD’s, their skills are not fungible except at a pre-specialty level.
Nonetheless- I think my original point still stands- a poster claimed that we “need” more doctors; but telling HS kids that they should be spending their college years gunning for med school may not be the best advice (at an aggregate level, for an individual kid who is talented in this area? sure) given that med school and residency slots are rationed.