Network effects matter and no you can't just 'email/call them'. Not everyone automatically has those. You can get it, but something like FB, loose connections, regaining contact (you literally don't have their email/phone numbers and don't tell me 'oh but you lost touch for a reason'), is a nice thing if its CEO wasn't who he is
Sure but for most people they will not understand the consequences until it is hammered by constant notifications. And those will not happened until such law are mandating for the users to be notification left, right and center. After all Facebook is one of the original promoter of dark patterns in UX/UI.
Unfortunately people are still not that smart or aware of the risks. They should be, but that's not the reality yet.
It's worse. Even if you talk to them, explain in detail why and how Meta and their products are evil, they will just nod, frown, go "yeah, that's serious, someone should do something", and then they will turn around, check their Whatsapp messages and post a story on Instagram about their lunch.
I went to watch the Social Reckoning (new sequal to the social network), which was somewhat thought provoking. After it finished, I get up to leave and see a couple in front of me immediately start scrolling through facebook and not speaking to each other - made me chuckle!
Maybe they started deleting everything, before disabling their accounts? One can but hope. :)
Can some post ads on Facebook telling people to get off Facebook?
Watch those ads get pulled. And then see actual scams being promoted.