Bill Spight wrote:And so the answer is to subject adults to repetition to the point of boredom and beyond?
It's an interesting turn of phrase, that. Learning something well involves some drudgery in order to internalize it. So, yes, adults must subject themselves to spots of mindnumbing boredom if they want to exceed their present level. The implication of humble submission is quite right.
Bill Spight wrote:As Znosko-Borovsky said, "Do not make the opening moves automatically and without reflection," that is, from habit.
So, he warned against putting any trust in the thousands of hours spent trying to learn the opening playbook for your preferred chess openings? That's just cruel and very dismissive of all that time you spent trying to derive the best response to any at least marginally sane responses.
An enormous amount of reflection has already gone into it. You're either a self-infatuated idiot or very well-versed, at this point. Any further doubts during play are meaningless. You can't fix not knowing the opening playbook correctly on the fly, so there's little sense worrying about it.
The only thing you should focus on is where you exit your playbook, since it's usually not deep enough to put you at checkmate. This is also why I don't like chess as much as go. It takes several moves before I actually get to play, and keeping the playbook up to date is a chore I don't enjoy.
Bill Spight wrote:In regard to adults asking questions, he had this to say, "Do not believe all that you are told. Examine, verify, use your reason." IOW, ask questions. Don't "just do things".

You need to learn the what, and also the why. It's important to know why something is correct, and you don't fully know a subject without that. However, that often gets misinterpreted as a license to constantly disrupt every explanation with incessant questions.
You don't meaningfully verify new knowledge by putting pressure on a teacher. You verify it by first taking in what you are told, then thinking it over, looking for flaws or incomplete parts. If you cannot yourself explain the gaps, you then ask the teacher.
If you interrupt the teacher's explanation, you probably didn't listen to the entire thing. If you start talking the moment the teacher stops, you probably didn't think it over.
Also, if your teacher says it's faster to just do it a few times and get the hang of it, it's probably true. This is someone who knows the subject better than you. Some provisional trust is really not that much to ask for.
I really feel that this fear of "mindless rote learning zombification" is severely overdone in western culture. It isn't supremely efficient to do rote learning without understanding properly, but it isn't such an enormous risk when you're a human being with the ability to think for yourself. You could provide the missing context yourself, if your teacher is really so awful that it isn't included in the course at all.
If you leave out the rote learning and instead have an elaborate high-level theoretical framework, along with a very positive attitude towards your own competence in the subject, you are going to dislike reality a lot.