One of the biggest predictors of whether someone is unsafe is whether or not they respect boundaries and whether or not they will stop.
A lot of unsafe people won’t stop because they feel justified/entitled to do what they are doing, or because their feelings are more important, always.
They often have to have the last word.
It might feel satisfying to think that there is something you can say or do to make them understand, or to ‘win’, or to have the last word.
But it is often literally impossible with this kind of person because they will almost always out-escalate you.
And you can’t get them to understand your perspective much less agree on reality.
Unsafe people are unsafe.