It is worth noting that the new rule 4.2(a)2 differs from the old Decision 14-3/13.5 in that the decision distinguished between warming before and during a round, whereas the rule says it is illegal whenever the ball's performance characteristics have been deliberately altered,
The advert is correct in that the rule has been revised but not in the way they say
Most doctors are not self employed. And we don’t have to follow rules by the AMA even if we are. Our rules are to do no harm. No entity ‘controls’ us. The AMA have zero control over us. Sorry, poor example.