And so what? You have never seen bullies in School ? Are you going to go in the streets and fight for moral righteousness in every corner ? Or are you just picking on Linus because it's an easy target with no controversy ?
It's not like people who work with Linus don't know how he acts and interacts with others. I'd rather have someone who is blunt and direct than someone who smiles to your face and says shit in your back. At least you know where you stand.