True, this player did not get hit in the face. But this was an incident that occurred timely and illustrated getting hit by a hard struck ball.Your points are valid, however you may have wanted to use an example that showed how a mask would have made a difference. In this case it would not made any difference. To your point worse injuries are possible, car crashes, drownings, etc. all which are as relevant to wearing a mask as the injury shown in the video. This goes to the point that this is an emotion driven issue, with little application of logic or empirical data.
Baseball pitchers are more likely to be hit on the side or top of thier head because of how they finish thier delivery. I've seen local baseball pitchers wearing an insert in thier caps that protect the tops of thier heads.
Softball pitchers finish thier delivery with body and face up toward batter and are more likely to get hit in the face than the top or side of head.
Further, we train fielders to watch the ball into the glove. If executing properly, they will be more likely to receive a face hit.