The rule is not designed for an official to call a penalty every time two guys helmets happen to touch each other.
If a guy is leading with his crown against a defenseless receiver, yeah call it.
If a guy is loading up the chicken wing to deliver a kill shot, yeah call it.
If a guy is bringing the pain after the ball is already gone by, then yeah call it.
But for gawd's sake you don't throw a flag from 75 feet away 3 seconds after the play on either of the two guys who were getting down for a key, contested ball.
That is well outside the confines of the rule, both in letter and spirit, and imo is a prime example of an officiating culture run amok with the implicit approval of the league.