Okay on the 1 year difference but I want it to be June 1. Why should your arbitrary day on a calendar be better than mine?
The argument is for birth year. That’s not arbitrary. It’s the calendar year…literally the start of a new year. This is how every other sport aside from lacrosse handles it.
USA football uses 8/1 and I think basketball does to. There goes the birth year argument.
Soccer uses 1/1 - 12/31, as all of society does.
USA Soccer is based on the European model of soccer development. You also are usually required to not play any other sport in their top clubs and academy teams. USA soccer is over the top in their quest to compete against the European countries with 10 times less people.
Going by a 9/1 Birthday or maybe 8/1 is close to the start of majority of schools in this country and keeps all kids in their proper age grade. Common sense says that is best solution.