Since the OP claims to feel cynical about the FAANG mission and the the work is not connected to people that the OP cares about, if one is financially secure en

Since the OP claims to feel cynical about the FAANG mission and the the work is not connected to people that the OP cares about, if one is financially secure enough to not have to worry as much about income or lifestyle, there are plenty of opportunities and situations that could desperately use that level of tech expertise (or even just another volunteer) but can't nearly compete in terms of compensation. Anything at the state or local level in the Health and Human services arena for example.