If you use social media, you are a fool. You are completing your own STASI dossier for FREE and WILLINGLY. You are aiding and abetting in your own enslavement and oppression! You are an idiot.
IRL interactions are strongly bounded by geography and the frailty of human memory. Online isn't. The difference is scale and persistence. Our social intuitions aren't calibrated to it. It only takes one deranged person to ruin you, and that person might be on the other side of the planet, and might not even have been born yet.
Example: I have an app for a well known convenience store. I decided one day to disassemble it to see what libraries are being used. In addition to all the tracking one finds in most apps, there was a Bluetooth library that apparently allows the store to track where you walked around the store because of strategically placed Bluetooth beacons.
You basically have to be a hermit to avoid a lot of this and even then its not great.