I feel like I'm reinforcing stereotypes and it makes me feel bad
I am not sure I understand. Are you reinforcing the stereotypes on purpose?
I think that this is a good strategy for damaging other peoples reputation
You're a good person to want to change your behavior about stereotyping other people. Like you said, it can damage peoples reputations as well as their mental state to be judged in that way. Think about why you feel bad and make some changes.
It's just a strategy to hurt them online. They don't like that I'm trying to make change and they just want to ban me.
Every person is unique so it is bad to use stereotypes in making decisions and dealing with people.