Not everyone has the ability to act on said 'choice' and risk their jobs, income, benefits.
I have refused to implement unethical code when I earned US$8.8k/year and supported my mother (living in Brazil, beginning of my career), I believe a Google engineer has much more leeway and money sloshing around to decide it's not right to do something unethical, and be vocal about it. There's much more of a choice than I had at that time and if I managed to choose to not be an asshole doing unethical bullshit, and didn't starve my family in the process, they are pretty damn able to do it as well. Might need another job but c'mon, you have Google in your CV, jobs will come, stop being a greedy pig.
Anyone sick at home? Anyone with a visa? Any debt? Student loans? Kids?
You wouldn't just need any other job, you'd need another comparable job.