I was making the 3 pt stance point as an elemental aspect of the game. Really for injuries has no bearing on ol. Now in an adjacent way it can lead to injuries is a guy stands straight up. If a rusher can get into his body often you will be taking damage. It is not even a huge injury cause but I can see back issues as a possibility in that way. Now for other positions and lack of quality blockin* I can see rb and qb taking more shots than they should. If ol whiff on blocks regularly both positions can take hard hits before they have an opportunity to defend themselves.
other poor coaching in younger levels that can lead to injuries is rbs running upright. If you don’t get behind your pads you will get hurt. But being 16 and being able to juke everyone at you level out of their shoes works then. It works less in the nfl. Not learning a route tree and how to sink you hips in cuts. Suddenly that’s what’s required and you are blowing out knees. You are a defender that crashes the line and blows up plays. So you never learn to read your cues so they misdirect you into being blown up.