Is my boyfriend being too harsh?

My boyfriend has a son who just turned 15 years old. His name is Jace. Jace is very sweet and will give the shirt off his back for someone he has put himself in very dangerous situations trying to help people. Last night he was walking through the neighborhood to the store and heard a woman being beat by her husband. She came running outside and he dragged her back in. My boyfriend has had a conversation with him several times about calling the police in these situations and not always getting involved. He doesn't listen. Went into help her. This guy had a gun. No one got hurt thank God. Some other neighbor called the police and he got arrested. The poor woman was taken to DV shelter. On the way home my boyfriend told him he's not allowed to go walking by himself anymore. He asked why and my boyfriend pulled into the parking lot and started ripping him apart yelling at him for continuing to intervene with stuff like that and he's a child and needs to stop. I tried to tell my boyfriend that there isn't a reason to be mad but he yelled at me saying "No! I have a reason to be pissed!" And starts yelling at Jace asking if he wants to die and Jace said no and he yelled "Then why are you so fucking wreckless with your life! How many times have you almost died because you put yourself in these stupid situations!" I sat there because nothing I said calmed my boyfriend down. Jace said he was just trying to do the right thing. What a man would do and my boyfriend said "Yeah well you're not a man! You're a child! And you keep this shit up I'm gonna end having to bury you before you become a man?" He asked him if that's what he wants. To be coming out in a body bag. My boyfriend is crying at this point and Jace starts crying too and saying no. My boyfriend unlocks the door and says "Get out. Go to your room." I told my boyfriend he was being way too harsh and in the end he helped a woman. My boyfriend said it's not his job to be Superman when he's a child. The guy would have killed both of them. He should have called 911 like the neighbor did. I said "Yeah he is young but" then my boyfriend cut me off and said I can have an opinion on his parenting when I have kids. And got out the car. This morning Jace and him weren't really talking. Emotions are obviously still high. He drove him to school and that was that. They both are clearly very emotional right now. I just think my boyfriend overreacted a little and was harsh. But I don't have kids. I know there are a lot of moms on here so you agree he was harsh?