For me, it helps.
It has taught me that I can trust people. That someone can be safe (and what that looks like and feels like). That I have a voice. That I can speak up for myself. That I can assert my boundaries and not have to feel guilty about it (I can say "no" or "don't touch me"). That I can have a relationship with others that is based on equality. How to communicate better (still practicing). Also still practicing processing in the moment...

How to handle anxiety better. Coping with talking on the phone

Looking at people's eyes when having a conversation (instead of reading their lips or looking at the floor).
All of these things help with my current relationships and with any future relationships. I do suffer from agrophobia, so pretty much any interaction with people is an improvement