There’s a distinction to be made between communication services and social media. Personal communications should of course be private, but social media is not

There’s a distinction to be made between communication services and social media. Personal communications should of course be private, but social media is not a form of personal communication. It’s a form of broadcast, usually to a company’s servers you have absolutely zero control over. You don’t need to “cosplay MI6” to be diligent with what you share and what you don’t. You should just be prepared to assume that anything you post on social media can and will appear in the future.