5 second count

[rbmartin]

In the church league in which I play, we have 1 referee who counts out loud (I assume he's doing the hand count as well) after handing the ball to a player for inbounds play. I've never noticed a trained, professional referee do this. I didn't say anything to him (no need making waves) but doesn't this give the inbounding team an unfair advantage by loudly and audibly warning the player to get rid of the ball? What is the accepted means by which to count off 5 seconds?