You CAN opt out of using anything Meta offers. Just don't use that abusive corporate crap!
The fact that they really want to disrespect your privacy, scrape every last morsel of anything they can get there grubby mits on for serving you ads, and feed you altered propaganda and shit that they think you should see says volumes about you if you allow them to do that to you. It says a lot about the Australian government too then. Here's EU taking these greedy corporate monsters to task while Australia is talking about giving them EVEN MORE personal information by trying to enforce ineffective faulty age verification with biometric government issued ID on social media. Just walk away.