I think the average person just simply doesn't care about their privacy.
In some of the music communities I'm in the content creators are already telling their userbase to go follow them on threads. They're all talking about some kind of beef between Elon and Mark and the possibility of a boxing match... Mark was right to call the people he's leaching off of fucking idiots.
Everyone has to chose what's right for them. The reality is Facebook having and selling that data will never impact the average person. But not be part of the family because you are not on Facebook is a real thing that will affect people.
This isn't choosing what's right for you. This is having no standards. Most of our society is like this when it comes to software for no good reason. Think how much better the world could be if people cared.
That's why those platforms still exists and why many of us still have to use some of them even if we don't want to. I don't want to use YouTube for example, but I have to, because creators won't switch to PeerTube. They prefer to be abused by a corporation than to try to change something.
You can start by learning about Free Software: https://youtu.be/Ag1AKIl_2GM. You might not have heard of it, since it has only been around for over 30 years.