This is of course what I’ve tried to do over the years. To make the internet a better place.
But it goes beyond just posting well and participating. No amount of human posting will be sufficient to counter bot-driven (or mechanical-turk-driven) counter-content. No amount of careful contributions will turn off the surveillance and targeted advertising. And it is these that are in large part the cause of the problems.
That’s why I’m not on Facebook. Not simply because it’s a cesspool (though it is) but because my posts can’t make an impact against the barrage of paid messaging and bots. I can’t beat the Facebook algorithm. When I have a thousand followers and only 22 of them see a post (actual numbers) I know my time on Facebook is up.