I have mixed thoughts about all this.
For starters back when I was in class my instructor would "Teach The Art - Train and Think Street" approach!
In class we would do drills that in reality you would need to slap an ear or smash the nose.
Instead we would hit the shoulder for the ear and for the nose we would hit the forehead not full force either but enough to apply the drill and hit.
We weren't going to injure each other over a drill in sparring/training is the point.
Not every technique is going to work 100% in the reality but you still train like that and adapt in the flow of motion through any move or technique you do.
For example -
Also in JKD / Wing Chun we use the Wooden Dummy ( Mook Jong) but you got to visualize the opponent in your imagination and see the strikes and counter/s. Also this conditions the forearms and builds up internal energies very quickly as an added benefit.
So its all subject to interpretation and perception in some ways no one is wrong or right it really is up to the student as well.
But when we had Sparring sessions or practice KALI sticking fighting we would wear full protection like this..............
So in my opinion I see Matt Thorntons approach a little unfair if I am understanding this correctly based on video on post #2
Also its up to the teacher / instructor to monitor the situation on-hand responsibly as well, there might be some aggressive gent/s on board that need to be pulled back so training is adjusted so on, if you are hurting each other well that ain't good I doubt there will be future members. LoL
All opinions welcomed of course thats my take on this in a nutshell!