I had an unrelated undergrad did my MSCS online (not JHU but same idea). It was great. But if you’re already senior at FAANG I’m not sure you need further legitimacy.
For rat raceing the pyramid it is still a differentiator at executive level.
Nobody wants to be held accountable, if projects go south, for having promoted to a leadership position a self taught engineer.
It's really about politics and accountability more than anything.