They all start with “it’ll just happen”
Then around 17, 18, 19, they realize the magic Baseball fairy godmother DIDN’T just give them pop. So then it’s “a swing adjustment! This one guy says this and this one guy says that and I’m going to try it all!”
They still don’t get any pop, and that’s when they either accept being mediocre, or give up
What they missed was the physical: regardless of talent, size and strength increases improves ANY hitter-this is because of the strong relationship between bat speed and strength (Miyaguchi JSCR 2012)
Instead, they’re trying to climb the levels without the strength and athleticism they need to hit good pitching: all the swing adjustments and swing tweaks are USELESS without the necessary PHYSICAL development!