You did construct a strawman, primarily because you mistakenly think that a hit "that results in head contact" is always illegal and always punishable. You wrote that twice above.
Yet you acknowledge that Glendening changed his position (not just head, but also body). Again, read the f'n rule - its right there. Hits to the head are not always illegal. We can disagree about how the rule should be applied to this hit. But the rule is what it is, yet you keep posting what you want the rule to be which is different.
No, I didn't actually. I said a hit that results in initial and primary contact with the head is always illegal and punishable (barring completely unavoidable circumstances). I'm well aware that incidental head contact can occur on the follow through or as a result of grazing/following through a shoulder. That wasn't the case here. Initial contact hit the head. Majority of the force of the hit went through the head.
Bolded the parts that in my opinion apply to why this hit was illegal contact to the head:
48.1 Illegal Check to the Head – A hit resulting in contact with an opponent’s head where the
head was the main point of contact and
such contact to the head was avoidable is not permitted.
In determining whether contact with an opponent's head was avoidable, the circumstances of the hit including the following shall be considered:
(i) Whether the player attempted to hit squarely through the opponent’s body and the head was not "picked" as a result of poor timing, poor angle of approach, or
unnecessary extension of the body upward or outward.
(ii) Whether the opponent put himself in a vulnerable position by assuming a posture that made head contact on an otherwise full body check unavoidable.
(iii) Whether the opponent materially changed the position of his body or head immediately prior to or simultaneously with the hit in a way that significantly contributed to the head contact.
To comment on:
ii) vulnerable position, sure, but not a position that made a full body check unavoidable.
iii) no change in his position really caused this head contact. He pulled up as he went to play the puck and glendenning's head was actually rising upwards as he got hit. He wasn't lowering his head to try and duck the check.