He's coming in upright initiating the contact in just about every example of any head on head incident I have ever seen it's the player initiating the contact that's put under the microscope not the mostly static one that was cheap as hell imo.By not hitting your man's head?
You'd also have to question if VDF is in control he's coming it at distance clearly annoyed at losing the initial one he stands to gain nothing (outside of the yellow) the ball was more than secure by then.