I thought Instagram had like 11 people? Whatsapp had like 47 right? If you add Facebook and Messenger like 200 should do it.
A better question: could you find ten thousand qualified people in 2021 who really want to go through 4 rounds of interviews with a company that's quantitatively proven to promote human misery?
Few companies are benevolent and have never done something wrong. Apple and the CSAM is only the latest bad story for them. Google and privacy and dragonfly. Amazon and warehouse workers. Facebook and... Facebook. Microsoft and antitrust/EEE.