The OP is bullying themselves. Many people who stutter choose to make their own life worse by destroying their own self-esteem with imagined judgements of others. Bullying is horrible, no matter who is doing it. I don't apologise to bullies. A friend stops others from self-harming. A supportive community stops others from self-harming their self-esteem through self-judgement. I care about people enough to stop them bullying themselves and stop them self-harming their self-esteem.