I understand the basic premise... Player safety. They are also using a traditional precedent that targeting, just like any other penalty, is a judgement call (not like illegal forward passes... Those penalties are reviewable). HOWEVER, ejection from the game plus a 15 yard penalty is too stiff a penalty. Either:
1. Keep the 15 yard penalty intact, do not eject players and nothing is reviewable... Just like every other penalty
2. Allow the ejection and penalty to be overturned through review, especially since they are obviously being more liberal throwing the flag in the interest of player safety.
The current compromise they have is awful. It punishes a team simply because the officials were wrong.