> We are so used to being betrayed and hurt that we now accept it as normal. It started off innocuously enough, but now we are effectively being hurt on the regular. We have learned helplessness, and that will not end well.

That's not what a victim mentality (https://en.wikipedia.org/wiki/Victim_mentality) is. What you're describing is closer to learned helplessness (https://en.wikipedia.org/wiki/Learned_helplessness), which is different.

> Their past actions irreversibly tainted their reputation, and they are no longer worthy of our trust.

This is closer to something you might hear from someone with a victim mentality. I wouldn't go so far as to say that this is evidence of such, but certainly this rigidity of thought around being a victim to another's actions contributes to such.