I don’t see why that would solve the issue. your browser is communicating with facebook’s servers, so if they log your communication it’s not exactly a violation of your private property rights
In principle, sending your data in a way that's decipherable to the backend isn't in principle required. WhatsApp encrypts (or at least used to, not sure about now) messages.
And no doubt it's not compatible with their current business model. Which is the point, it's a model that exploits property that isn't theirs for unfair gain.
