[hindsightbias]

How many 55 year olds work at FAANGs?

[ggm]

Brian Reid isn't one of them, we know that from a lawsuit with Google (he was 52 at the time)

https://en.wikipedia.org/wiki/Brian_Reid_(computer_scientist...

OTOH Vint Cerf, Rob Pike & Ken Thompson are all doing fine there. So, YMMV