This is a great answer. People have different learning styles.
Some mentees will also likely have a desire to impress you so they'll get good at doing things exactly how you want them to do it. This is also learning, but not the learning you want.
I had the same weird typing style but really wanted to use the split ortholinear keyboard layout due to some pain I was feeling in my forearm
Adapting to the layout was frustrating. It took me a week of standard use to not have typos. About a month to lock down the location of modifier keys and layer layouts.
Was it worth it? In my case, absolutely. The pain in my forearms disappeared. I also type "properly" on standard staggered keyboards now.
It turns out that in my case, the weird typing style was part of why I was feeling pain in my forearms in the first place.