I think the key to lasting social change is literally just not to do it too suddenly or people will hate it. But if you do it slowly over a long time, people will just kinda go with it because they have more important things to worry about.

There's something deep in the human brain where a specific person, or even a small-enough-to-be-identifiable group of people one day goes "OK WE'RE ALL GOING TO DO THIS NOW, THIS INCLUDES YOU" the knee-jerk instinctual reaction is "What? Why? I'm not gonna do that! Fuck you!"

And on the other hand, if it's much more gradual and kinda already feels like everyone is doing it, people will generally roll with it unless they happen to have a big problem with This One Specific Issue

Basically, if people feel like a very small group is demanding that they change their behavior, they will generally resist it and/or hate it, depending on what it is and who it's coming from, cause people are stubborn and petty like that

But if it just sorta feels like A Thing That Is Happening, generally in the world, then yeah sure why not, as long as everyone else is doing it, I don't have time to dwell on this I got bills to pay.

I don't really have a point here but I guess if I did, it'd be "Act like your radical stance is already the prevailing opinion and you will generally have much more success in spreading it because as long as you're chill and normal about it, the vast majority of the time people won't care enough to oppose you, and even if they do care, they still probably won't say anything if they think they're going against the perceived majority."
Always remember that conformity is a helluva drug and 90% of people are not gonna want to start a fight 90% of the time, AS LONG AS YOU DON'T MAKE THE OPENING MOVE

Idk why I'm harping on this I guess I just think it's useful and more people should do it. Expressing mild confusion and/or pointedly ignoring someone's bad take will do much more than giving a righteous appeal to their better nature or painstakingly explaining Why They Are Wrong.

"Haha, what? ... Yeah okay dude, sure..." will linger in someone's mind far longer than a lecture will.

@Dayglochainsaw Works most of the time. Also after the 1st interaction, best is to ignore, turn a blind eye. Of course there is that group of people that gets more and more indignant and loud the more they are ignored, but then block or mute is a good option...