Like NFL players that celebrate a touchdown before they cross the line, only to have a defensive player catch up to them and knock it free. Nothing makes me happier than see them embarrassed like that.
Finish the play first, then celebrate all you want.
Do we know that Acuna hasn't "shown personality" in the past and was already talked to?
There's a difference between showing personality (after a play has already concluded) and letting it affect the outcome of a play.