People in the US care far too much about some possible badmouthing. Did Mark Zuckerberg call me a virtue signaller? I dont care. Zuckerberg is creepy as hell. Did some zionist genocider call me an anti-semite? yeah I dont care about their opinion on that either. Did some republican say democrats are weak on some issue? Who cares. All they do is lie and talk stupid all day long.
We all need to stop caring about what people we dont respect think or say about us.
Dont you worry-- even if you never joined they made a ‘virtual profile’ for you anyway. LinkedIn did the same thing when they scanned trhough everyones address books as they were signing up. Your friends basically join you into it. The only way to get out of that is to have no friends or connections.