Microsoft has north of 100k SWEs working for them, the idea that corporate management could be personally responsible for the decisions of every single one is absurd.
It’s not “CEO must know everything a junior does”, but more of “If a junior messes up doing something for the company, the CEO is finally answerable” - be it to the board, the govt or the public etc.
Rephrasing it - there’s a reason it’s Zuckerberg and Pichai and Tim Cook who go to congress, and not the folks implementing it on the ground level.
That's also the way the world works.