Conjecture? If you are asserting fact, please expand upon your suggestion.
The liberal feminist nuns are retiring and dying out; their orders are not getting new vocations, so there are fewer of them to sit on Boards of Review to winnow out faithful Catholic young men who wanted to be priests, but whose 'outmoded ideas', like celibacy, and devotions, didn't fit their modernist agenda. I know of one Seminary in the South that had gotten so bad that the new younger Bishop wouldn't even send his candidates there until he'd had a chance to make some changes.
Unless the Bishops demand change, the Seminaries won't change.