grandtanteJE65
When people are capable of writing, saying or understanding the grammatically correct use of the gerund, as in They object to my going instead of They object to me going.
It was a French person who taught me that rule when I was at university in my thirties. She was one of my tutors.
Only one other person in the room was aware that rule existed, and she was, if I remember correctly, the oldest mature student in the room, some ten years older than I was. That might be an indication of how the teaching of grammar plummeted between her secondary education in the '60s and the rest of us.
In my case, it was a question of once learned, never forgotten, but in all honesty I don't recall either seeing or hearing it used more than a dozen times in the thirty years that have passed since then, and when speaking to others, I sometimes deliberately use the 'incorrect' version so as not to draw attention to myself.