I’m currently on a TLK, and mostly because I want to learn to stop moving my hands away from the home row. It’s not even only about arrows, but also home/end page up/down etc. and combinations with them which I use a lot and it just get slow and weird since I have to reposition my hands every time… mine is currently quite limited in what I can program it to do unfortunately.
The point is just differentiating your behavior between what you call a “bad” or a “good” junior.
And from experience the difference is whether the want to learn (regardless of their skill!!) or not (i.e are they passionate or it’s just a job?).
Passionate seniors gets frustrated when they try to teach bad juniors, but there is no point on doing that, the problem was just that the senior was not involved in the hiring process…