>>109451510He already did.
Before I started watching Steven, I was on a path to being - or maybe I already was - an absolute jerk.
I was good "friends" with a /pol/+/a/+/g/ guy, one who would constantly rave about how much he hates people who like such-and-such anime, or use such-and-such software, or vote for such-and-such politicians. I would be constantly dragged into his hate machine, and I would repeat his views and cheer for him when he bullied people online.
I was actually alienating my other friends because of that, as he would teach me to disrespect everybody who disagreed with me. And then he would cheer for me, as I insulted colleagues and random strangers alike for the most trivial of reasons.
Lots of things happened since then, but - long story short - I broke contact with that guy around the same time I discovered Steven Universe. Now, SU wasn't the direct cause, but it helped me realize just how bad the "friendship" was for me and for people around me, and it helped me cope with the "loss" of a "friend" at the time.
I even tried getting him to watch SU with me, as one of the last acts of friendship, but he already knew of the show via /pol/, and thought it's gay propaganda, and so he dismissed it immediately. Seeing his reaction pushed us apart even further.
Additionally, while the show's fandom definitely has a lot of genuinely toxic people in it, it also helped me meet many great, supportive individuals, who were with me when I needed them, listened to me vent, and were instrumental in my "recovery" from the chronic assholishness I suffered from.
I'm not perfect, but I can definitely say that I'm a better person now than I was before. Steven Universe redeemed me, and now I try to be as kind and understanding to other people around me, whenever I'm able.
I just wish that one day I'll be able to redeem my old friend as well.