@mikemac not all schools with premed committee work that way. My son’s undergrad give everyone a ocommitte letter. They specifically pointed it out during our visit. And I believe their med schools acceptance rate is close to 90%. But you’re right that most schools weed out. When we visited our state school they said that their rate was 85%. When I pressed them a little they admired that it’s 85% from the kids that they will give the letter too.
But in general a good student can succeed anywhere