He has beeen charged in accordance with the laws of the state of Texas
The rest of your rant do not apply as they do not exist
Texas does not consider throwing a drink at someone assault? Is it okay in TX for an adult to assault a minor? That is a big no no in most states.
I admit I don’t know anything about TX law but it can get serious in most states if an adult assaults a minor. With no injuries it would likely be simple assault but adult against minor would be a new ball game.