Brutal Hit: Trevor Lawrence went to another universe (Update: Al-Shaair suspended 3 games)
No, it's dirty. You don't drive your elbow into the face of a sliding QB hard enough on impact to bounce the QB head off the turf to cause a severe concussion.
The defender was obviously trying to rough him up and get away with one. He seriously injured him instead. We can strongly assume that wasn't the defenders intention, but it was dirty and unnecessary.