What I don't understand is how you can be Facebook employee and also think the platform is the problem - lots of these especially in the React community [1].
If you believe Facebook is the problem, and you're quite vocal about it, and you continue working for Facebook, then that seems as close to paradoxical as you can possibly get.
If that's the case you are by definition working for a company which values you disagree with. That's similar to working for an oil company while being a climate change activist on social media.
1. https://twitter.com/dan_abramov/status/1267544361929256966