Is there a policy on posting false generalizations/stereotypes, posting opinions as facts, and/or continually posting inaccurate information as if were fact/certain?

There are only a small handful of people who do this regularly on the forum as a whole, but where I post, it has become widespread. I am so triggered--because of how my mother continuously lied and distorted reality--that my place of support has become a place of panic attacks. I know that this person does not mean harm, and that this is not the past, and that she is not like my mother, but that doesn't stop the panic attacks.

I blocked this person, but s/he posts on nearly every thread in the forum I use, and I cannot avoid much of the content because others quote his/her posts. I've also tried to gently point this out, but either the person did not read my post or ignored my post.

Am I out of options?

Thank you