If they help me learn at 100% speed and some other more enjoyable method helps me learn at 25% speed, I’ll pick the latter every time.
Thankfully, I didn’t become a doctor or lawyer, I would have been screwed.
As a working adult, we hardly get this kind of ego boost unless we somehow know our colleagues salary. Even so, there are many other factors outside of knowledge storage that determine one's salary (e.g. feedback from teammates, number of closed sales etc)
[1] Actually, it's not 100% speed but 1 step back and 2 steps forward. Because the initial time and motivation cost is non-trivial.
This is moot anyway, because most other learning methods require longer focus and are not possible to do while on the go, during short commute in a tram, or 3 minute wait in a queue, and much more.