iPhone protected you from Facebook call scraping. Android, not so much
As an iPhone user I’d like to think iOS does not allow this. However, I understand there’s a private API that allows larger companies access to functions that are not available to regular developers. It allows them access to the microphone without the red bar showing even when there’s not a call. Like others have, I’ve received ads for products spoken about near my phone but never typed into a device I own or on my router.