FB is listening on your phone.
Big deal. When you look at a list of just exactly who is spying on you on a daily basis - you learn to accept our “New World Order”.
Facebook, Amazon, Alexa, Google, your IP provider, your cell phone carrier, Siri, OK Google, Apple, any and all apps on your cell phone, your car, the doorbell app, and of course our good friends at the FBI and the NSA.
To name just a few off the top of my head.
FB is listening on your phone.
If you aren't doing anything illegal, you have nothing to worry about.
/s