I agree very much! Some time ago we had a parochial vicar who wore a pectoral cross outside of his chasuble. It was a gift from his family and he had the bishop’s approval to wear it. It’s not as if anyone was going to mistake him for a bishop anyway.
Yet I remember the liturgical technicians in my parish grilling him about it.
From what I understand in years past, a number of actual high school minor seminaries (not simply boy’s Catholic high schools) had fairly poor overall academic programs (perhaps too narrowly focused?) – unlike typical Catholic schools which have always been some of the best. I know of one archdiocese where there was great reform in their HS seminaries.
I have also heard that many entered HS minor seminaries in the past as a means to a free Catholic education without as you note, any real discernment of the priesthood. Not many (only 6) HS minor seminaries left in the US anymore.