The fact that some players learn by transcribing, while others learn by jamming, and yet others learn by rote theoretical study, or 10-hour practice sessions, etc, is a big part of the variety which results in the wonderfully varied tapestry of music styles and approaches that humanity creates and enjoys.
Not to take away from the age-old, valid advice in the link about the value of ear-to-fretboard work.
The individual who has a breakthrough often feels compelled to call it a “system” and start telling others about it.
The great advice someone has is just what worked for them. It will probably work for others, especially if it repeats common advice, but it won’t work for everyone.
I used to stop all the time, when I made a mistake, between repetitions, when I finished the piece.
I agree about ear to fretboard.