It's good that you are seeing hypersensitivity. This is something we can address ourselves. Yes, I'd imagine most if not all stutterers are very sensitive about public shame and embarrassment from the past traumas as you've alluded. Some people can be assholes. We can control other people's actions, but we can control over how we react to assholes. A simplistic example: when someone makes fun of me when I stutter while ordering a coffee at a busy walk-up coffee place, I can either 1) feel shame and embarrassment, letting it eat away at me for hours throughout the day, feel anger and rage at the person, vow never to buy a coffee from that place again... or, I can choose to 2) think to myself 'oh look, another asshole making fun of stutterers. He's probably trying to mask his own problems by pointing out the problems of others - or he's just an insenstive dickhead - but anyway, I interacted with a dozen other people today who didn't make fun of my stutter - I'm not going to let that coffee house asshole ruin my day. Sure, it's easier said than done but by taking ownership of how we react to assholes is how we build up a better quality of life for ourselves.