[jdietrich]

The GDPR says that consent must be freely given and freely revocable, otherwise it isn't real consent. It would be obviously unfair if, for example, your employer could say "agree to install our spyware on your personal devices or you're fired", or for your landlord to say "agree to let me put surveillance cameras in your apartment or you're evicted". That isn't consent, it's coercion. A right that you can be coerced to relinquish isn't a right.

Facebook have a right to charge a subscription fee. They have a right to ask you to provide your personal data. They don't have the right to charge their users a privacy tax.