I remember when I was learning to drive in the seventies, the young lady who lived :across the road from me told me:
"I took my driving test, I wore a skimpy top & the shortest skirt that I had, I looked as tarty as I could,,but he still failed me".
It was not, and is not, one way.
How can you generalise from an isolated example? Even then, she might have failed her test simply due to having poor driving skills (irrespective of her clothing).
Both my daughters had male driving instructors and both passed their driving tests (one first time, and the other second time) and with no concerns about their (different) instructors. All this means is that, based on their experiences, these instructors were professional in their approach to teaching them to drive.
There may be rogue driving instructors, but the assumption that young women can as a tactic charm their way to a pass seems speculative.