Yes, Yianni has had injuries, but they are talked about often. Yianni's recent concussion and college ACL are mentioned most times he is talked about. He's also hot/cold bc like his buddy Vito, he has been someone who took on ridiculous weight cuts. Also, he gets involved in a lot of unnecessary scrambles, where his opponents are as likely to score as he is. (and also lead to injuries)
I personally like him, and think he is great, but the problems run deeper than just one thing.