When someone tries to kill me it's a safe assumption that they're not going to honestly answer any questions I ask themselves.
No he's not. Yes he was a Specialist, trained by SHIELD, just like your precious Bobbi but he would never be happy about having to do any of the things he's done. He knows he's done terrible things as he accepts them. She didn't show any remorse for selling me out to HYDRA.
He was never loyal to HYDRA, he was loyal to Garrett, the man who manipulated him for half his life.