That has nothing to do with why the NFL is protecting the QB. It is about protecting the owner's large investments in QB's. It has everything to do with money and nothing to do with the player's well-being.
Personal injury litigation has to do with money, too. The NFL is looking at potentially huge financial liabilities tied directly to the well-being of the players you cite as irrelevant to owners. The two things are not mutually exclusive. The owners care about the well-being of the players
because that affects the value of their investments.
I agree it has everything to do with money. That's why I stated earlier in this thread that
the NFL is looking a litigious nightmare and acting accordingly. That's a money issue, not a humanist endeavor. And that extends to injuries involving players at every position, not just the percentage of money tied up in quarterback salaries.