Went back & checked 2018's Little League rosters. All three of the kids who left for 10U travel ball got cut by the high school program. 3 of the 4 kids who left for 11U got cut, and 1 of the 2 who left for 12 U got cut. So we had nine kids that 2018 played with between tee ball & majors that left for "greener pastures", and only two of them are playing in the high school program as sophomores. 2018 didn't start travel ball until he was 13 (same with about ten of his HS teammates) and that whole group has turned out just fine.
Unfortunately 2018's Little League has went from the 450 kids of his era down to under 300 kids today. Not necessarily because of travel ball - many families have left for Pony so they can play more of a "real" game with leadoffs, pickoffs, bigger fields, etc.