That's a very 1980s/1990s mindset about how early weight training can stunt growth.
I think it's pretty much unanimous among elite coaches these days that kids can start weight training in high school - with a very qualified coach and not overdoing it. But getting to college without knowing your way around the weight room can lead to its own problems.
Both his parents were coaches, he’s always been good with kids, and SW Missouri where his girlfriend is from will provide him a chance for a fresh start and maybe a fresh support system.
We won’t know until we know if this works out, but I’m optimistic about it.
Ryan Lochte’s dad Steve strongly believes in no weight training until college. This is refreshing since kids seem to be doing weights earlier and earlier, sometimes as early as middle school.