Has to be forcible contact at the head or neck
Head or neck AREA. Don't leave out important words. Also, when in question, this is a foul. At the very LEAST, this is a when in question hit, which makes it a foul. I didn't think so at first glance, but after watching it a few times, it is a launch (which means any contact with the head or neck AREA makes it pretty much automatic) and there was clearly contact in that area. Those saying the helmet contact is incidental are ignoring the fact that he did lauch. Helmet contact might be incidental in certain plays, but here it shows the hit is high enough to warrant the foul -- the number "2" goes right into the neck AREA. And there's no question the contact was forcible.
If the officials missed this, I can understand why. But at slow motion, we need to agree this is the type of hit the committee wanted to eliminate. If the blocker doesn't launch, THEN we can talk about all sorts of things like incidental helmet contact, but I have to believe the intent of the rule is to eliminate the launch or at least keep the hit CLEARLY in the middle of the chest if it does happen.