I've taught at a secondary school for years and got blocks and slurred long pauses on single alphabet, it sucks but it's a human condition, I still went everyday, said what I needed to say and had a lot of fun with my coworkers. Shitty people exist and they prey on what you show is a weakness, if you show it's your stuttering then they leverage that and make it more of a big deal than it is, you're not less human for not having good skin, tall or poor speech.