Sergey could decide to be put in a shared cube farm for 6x 10s a week and see how long he lasts.
I think there's a large difference between the fatigue invoked in work that is some variant of managerial "in meetings where it's low information hot takes 80% of the time" work, and actual engineering work where drafting design documents, working on code, and context switching while waiting for CI or other compute intensive processes to complete, or for folks to do a code review.