Stepping back from the specifics of this incident .. and looking more generally .. I think that WR are paying attention to the asymetrry we have in the Laws between ball carrier and tackler.
We have a lot of laws prohibiting actions of the tackler (can't be high, late, early , straight arm, swinging arm, can't tip) but much less attention on what the ball carrier can do.
Pinky has it in #51 above
Why do we allow a ball carrier to deliberately make contact with a tacklers head ? When it is prohibited the other way round
I suspect WR are pondering this, and have concerns
I suspect some of that may have leaked out into guidance to refs , to pay attention to safety of the tackler (after all it's tacklers who get concussed, isn't it )
Part of this concern has leaked into the new Law Book with its curious new act of foul play, the hand off with excessive force.
This isn't just a one off poor decision, it's indicative of a change starting to happen