When people emphasize “I don’t care about your past”, it delinquently sheds light on the fact that there indeed exists a “past” that’s not okay. So stop saying shit like your past doesn’t matter, or I accept your past.
Stop invalidating people’s experiences because they weren’t favorable to community standards. Stop making people feel like shit over fates they had no control over. Be more considerate with your words. You don’t know the things a person has had to go through to get to where they are.