I think you maybe missing the point. Part of skill is speed, strength is just as important as skill for the reduction of injury. What good is skill if you're injured?
If you were concerned with injury prevention you wouldn't
do those box squats.
Not doing barbell deads for fear of injury is complete BS.
Why not switch regular squats to hip-belt squats... I mean you don't
want to hurt that fragile lower back. I see way more lower back tweaks from squats than I ever did from deads.