Tom Allsopp talks about how coaches are overly concerned with stroke mechanics at an early age over playing points and competing. Recently, I've noticed that the younger generation's groundstrokes look far more polished than before, but their mentality and strategy are way worse (okay, maybe strategy isn't significantly worse, but maybe strategy relative to skill).
This reminds me of how coaches and parents heavily favor two handed backhands due to how quick they are to learn and become very proficient with. They want better strokes now rather than developing a better player. Pete Sampras grew up playing in the 18s division since he was young enough to play the 12s division, and got beat all the time.
I also recall that the way kids used to start was by practicing with a wall until they were consistent enough at hitting the ball to play. Federer had to hit 50 in a row before his parents allowed him to play, the same for my high school doubles partner (basically spent a good chunk of time practicing with a wall, though maybe after he started taking lessons), the same for my friend's family (100 or 200 before any lessons), and I remember stories of Sampras and Borg starting by picking up a racket and hitting against a wall. I used to do the same, though my parents didn't like me using any of the walls in, or, or near the house so they quickly sent me outside onto a court instead (maybe that's why I struggled with the idea of being consistent over being flashy when I was young).
Is the notion of [learning optimal technique ASAP and learning how to compete on the way] worse than [learning how to compete ASAP and improving your technique on the way]? Is this a problem with younger generations (for example, players say born in the 90s or later)?