I work at a FANG company and I can guarantee you that there are quotas and no one is willing to speak out about it.
I was literally CC'ed on an email that said "[...] I want to remind everyone that the hiring season for 2021 is not complete and we are still missing our target for diversity [...]. For those who already reached their headcount for 2021 there will always be more budget for a candidate that brings more diversity to our workplace".
So forget it, it's just a new name for discrimination.