Incorrect. A pinch hitter is a sub called to hit for a player in an immediate situation, in use since at least the early 1900s. A designated hitter is a player named to bat in place of a position player, and was adopted in the early 70s.
There is no such thing as a designated pinch hitter.
Unlike football, baseball and softball are sports where players can have some fun swapping positions. As a lefty first baseman, I used to love getting a few innings in at third or short or shagging some balls in the outfield. And every position player thinks they can pitch!
This little plot thread is absurd. The “coaching” teaches kids nothing other than “have fun!”
Half of the internet today: “EVERY marriage I’ve ever known broke up after 6 months!”
Other half: “My marriage has lasted 85 years and so has everyone else’s I’ve ever known!”