I remember being given alcohol by my parents when I was around 10 or younger. My parents drink, but not a lot and never get drunk. To be honest I didn’t like the taste and it put me off for years. Took all the mystery out of it though.
Giving someone under 15 a drink isn’t going to turn them into an alcoholic, giving them the wrong atitude to alcohol is.
In France it’s very common to see children drinking in restaurants and it certainly isn’t frowned upon to give children watered down wine. They don’t hit the Stella every weekend and start fights and ddrink themselves to oblivion.