Trolls love the attention to them, especially when they get the attention through comments that offend the author of the post they comment, or others who comment on the same post. And in the case of Haters, not necessarily only on the internet, it can be anyone with vicarious hatred towards any other person who considers him different, such as can be Racists ...

Sometimes ignoring them may be the most practical solution, although there are situations in which it is acceptable to ban these users, and thus prevent them from continuing to grind (at least with the same username)

Thanks for sharing @surfermarly

regards