I'd love to be in that position. I have a strong resume too, and I'm more than ready to be rewarded for it with a high paying job which I can more or less cruise in. So count your blessings!
It's impossible for an organization on Google's scale to recognize everyone's potential perfectly, and match them with a perfectly challenging and rewarding position. At the end of the day, even Google has mundane jobs still need to be done.
The fault is on OP here, for not moving on earlier. FAANG is not the end all be all of software development. Consider joining a startup where you'll have a much larger influence over critical pieces of the software stack.
> life really is unfair and success in life is more linked to the lottery of birth and opportunities available to you
No offense but, you're just now realizing this?
That's literally life in a nutshell. Random chance. You of course have to rise to the opportunity, but that's often not difficult at all. It's getting the opportunity that is hard, but almost entirely a matter of dice roll. Accept it, and do your best in life.
Yes, I held out THIS long for a small form factor.