One thing that's made a huge impact on our society is that many people participating in cancel culture and promoting shame and anger as solutions also tell people not to vote.
I watched it happen three times before the last three presidential elections and it was a big part of the voter suppression messaging tracked by democracy watchdogs. I'd argue that the biggest impact cancel culture has had is electing Donald Trump twice, weakening faith in democracy, and increasing the appeal of authoritarianism.
Shame, anger, and other tactics of using abuse to promote change is simply not effective. That's beyond the fact that it's unethical.
Cancel culture is appealing because hate and anger are addictive and they make you feel powerful. But they also make it hard to feel empathy. This is basically the main point of Star Wars, beyond just wanting to make a swashbuckler film set in space.