It doesn’t even need to be an active effort of persuasion, just having them exist closely (in a somewhat censored way if everyone has them muted/defederated) is also good.
There was a recent study that paid trump supporters to simply watch CNN instead of Fox and they got pretty good results on moderating them down. You can’t discount how people, to some degree, absorb the views of those around them. Even just seeing reasonable takes can sometimes get the gears turning in someone’s head that could result in them thinking differently days or months down the line. I can say I’ve had my mind changed in similar ways, although I’ve never been a radical bigot.