Well. If you're stutter is consistent you notice it sticks out like a sore thumb. So when someone legitimately has a stutter like you do it's so obvious lol In a way they're not lying. People have temporary speech problems. In my personal opinion they don't mean to offend when they say "hey! I stuttered too!" they're trying to make you feel better, like in a way to say I know how shitty it is so don't stress to much. I'd say reach out to him and tell him. Life is short. And I'd bet he'd feel really good about himself knowing he inspired someone in a similar situation you know?