My boyfriend said this is why women don't belong in the military

My mom is a veteran and has PTSD from the military. She wouldn't talk about it much for a while. I think her job was some type of journalism thing. I don't really know. I've been with my boyfriend for 4 months and my mom got a little tipsy and finally opened up a bit about her deployment that gave her PTSD. She said they were in really bad conditions and there would be soldiers from the country they were in that would go into tents (TW) and would rape some of the men and they were forced to listen to it and there was nothing they could do. She remembers her younger fellow soldiers like between 17-20 breaking down and she was kind of being the mom trying to help them hold it together. She remembers losing several fellow soldiers to suicide. She started crying talking about it. My boyfriend asked her did she ever fight in combat and she said no. She personally didn't. He kind of laughed a lot and in the car he said this is why women don't belong in the military. I asked him to clarify and he said the fact that she had PTSD and she never even actually fought combat is why women shouldn't be in the military. They are too emotional. He basically called my mom weak. When she was helping others hold it together. I said I thought he respected the military and their service and he goes "What exact service did your mom give? Wasn't her job just being a journalist or something." Am I wrong to feel offended on my mom's behalf?