They are not very accurate. You’re more likely to get yelled at by a NCO(non commissioned officer) than by an officer on a day to day basis. Most officers are like middle managers until you hit the O-5 to O-6 rank. Officers give out orders, NCOs carryout orders using junior enlisted personnel. Most harassment stops outside of basic/advanced training, unless someone in your unit gets in trouble and then they might do a mass punishment where everyone is cleaning the barracks on a Friday night or over the weekend. I’m white, so I can’t speak much to the discrimination part, other than it didn’t happen much in the jobs that I was in. I’m positive it happens, but it didn’t happen out in the open when I was in. Obviously the current administration for the US government is changing that a bit. I can’t speak for the person you asked the question to, but I had two combat deployments and two trips to South Korea, with a solid bit of PTSD from the deployments.
The nazi call is coming from inside the House!