I disagree. I've been in and out of FANG companies as a Software Engineer and in my experience the education factor has largely been an HR thing. It has literally never come up in interviews. I think your performance on technical interviews combined with behavioral factors are the sole determinant. I've had one non-FANG company turn me down (as I was leaving a FANG), because I didn't have a degree. They were pretty upfront with that though.

I suspect it was at the HR filtering stage (done in Spain) that I got cut at.