Memorizing solutions isn't useful anymore. We have google to list out formulas. A deep understanding of problem solving is far more important and something you cant trivially search.
Downplaying it to 'dumb ones' is not helpful when they can solve polynomials without much trouble but are getting burned on concepts that should have been drilled down properly in middle school.
They were saying that back in the day as well: https://en.wikipedia.org/wiki/Why_Johnny_Can%27t_Add
At a low level, you can point out all the patterns that are in multiplication tables, but they won’t be remembered until the student has internalized the facts.
At a higher level, teaching epsilon-delta proofs isn’t a good way to learn calculus. Memorizing the building blocks and the chain rule is.
Same with understanding anything else in life - you don't really understand anything until you get to the point you can, in your head, predict a specific outcome, test it, and be proven correct, repeatedly.
(At some point you may learn to gain robust understanding purely from simulating things in your head, deriving insight from lower-level principles. But this itself is a skill, a hard one, which few people master. It's not something a random kid, or adult, can do.)
If a person's approach to educating their kids is coercive ("jump through our hoops or you'll be working at McDonalds your entire life") or downright abusive ("you're a worthless child to us if you don't meet this grade") then the results can be catastrophic. For every success story, this kind of maltreatment will produce many people who give up on learning altogether or drive themselves headfirst into mental illness. I definitely think history will judge this period as a bit of a dark age in education, the fact that people who've long retired still report exam nightmares says a lot about the completely arbitrary and needless pressure we put our children under.
In my experience being "well-spoken" (ie having an accent that's fairly close to RP) and being quick at picking things up has served me far better than any qualifications I have, both in the tech industry and out of it.