That's because bad people and good people don't even exist. It would not surprise me if your ex and those close to her saw her as a good person because good and bad are subjective concepts and whether or not you see someone as good or bad can depend on many factors, from age to relationship to personal experiences to culture and so on. Good and bad don't exist outside of the mind. The universe isn't going to punish those who you perceive as bad nor will it reward them because those values are just opinions that you happen to hold, not objective qualities interwoven within the fabric of the universe.
Your ex is living a good life (at least on the surface. We aren't her so we don't actually know what she is going through, especially mental health-wise) because she lucked out. Not because the universe is rewarding her for being a bad person. My stepmother isn't living a great life and she is someone who I used to see as being a bad person.
I find categorizing people as good or bad to just be unproductive at this point. It usually ends with people who see themselves as good not bothering to reflect more on their past actions and how they may have impacted others, while also leading to people who see themselves as bad not changing because they view it as an inherent aspect of their character. To add insult to injury, this type of black-and-white thinking has been used to harm and oppress people.
One of the best examples I can think of is when talking about the treatment of criminals. By promoting the view that criminals as just bad people, unlike us non-criminals, the government is able to get away with taking away their rights, subjecting them to terrible living conditions and using them for what is basically modern-day slavery. To make matters even worse, by stripping criminals of their rights it makes it easier for the government to target certain groups that it does not like by just labelling them as criminals. They are able to more easily get away with this because people view criminals as bad people and thus deserving of this.
While I also find myself sometimes defaulting to this facile view of others, it's better to try and fight against it. People are complex and this type of thinking is just regressive in my opinion.
I get what youre saying but I think you're misinterpreting my perception of good and bad. I don't think of good and bad as subjective, or based off emotion. Atleast i try my best to keep emotions out (in reality no human can be completely objective but you can get close by trying). I look at good and bad objectively based off what aligns with me and my society definition of what is classified as good and what is bad behavior and use that to pass judgement and classification.
My step dad was objectively a abuser, who abused my autistic siblings, and forcibly took my mom's money and left her and her 4 kids (which included me) homeless, cheated on her 4 times, yells and degrades her to this day over the Phone, has harassed her, and pretends to feel bad about it but then repeats it over and over again and tells everyone around him she's at fault for x-y and z reasons which are bs.
My ex used me for the simple title of having a boyfriend. I dropped everything for her if she asked and made sure I did everything I should have as a partner all the while she took advantage of me, constantly ghosted me then gaslighted me when confronted, she would make me feel bad for wanting her to show me more love, she would purposely be touchy with other guys and tell her friends she does it just make me feel worse, because it was "fun" even after I got to the point of starving myself down to 94lbs I finally put my foot down and told her no to things like buying her this or taking her here and she broke up with me. And that sounds like a lot of me but no. She also told her friends deep things and problems I have that I vented to her about and we're very private to me.
Her "friends" told me to break up with her because of how bad she treated me and the things she tell them about me and I didn't listen. In the school she was known as a problem not because there's no concept of good and bad but because objectively she just treats the people around her like tools for entertainment and nothing more.
These two people I see as objectively bad people that even if it didn't effect me personally and I was just a outsider looking in I could still safely say "oh yeah this guy/girl is just a piece of shit".
I stand by that but I was foolish in believing in karma and now as a adult I have now learned from life experience and maturity that those ideas and the premise of bad or good people getting what they deserve is a lie and a fairy tail.