I think if people want to 'quit' social media, then just use it to keep up to date with friends/family. You follow ONLY friends/family, and limit consumption to only that, don't consume content outside of that circle.
These full fledged 'quit' posts are nothing more than an attempt at a political statement that falls on deaf ears.
Does that really work? I haven't used one of these for a while but if I recall they're quite keen to take content that your friends/family have engaged with and ram it down your throat in hopes that you will too. It seems like you'd need all of your friends/family to do the same thing.
So I only use facebook on desktop, I don't have it installed on my phone. When I go to the website, at the top of the page is 'feeds' and on the left is 'friends' filter. I just bookmark that page and only view that.
These full fledged 'quit' posts are nothing more than an attempt at a political statement that falls on deaf ears.