The most cogent reply I have seen here.

She and/or you have a false conception of what a big five corporation is, or how it works. Yous probably also have a false conception of how relations of production under capitalism work as well. The man higher up the hierarchy at the FAANG has a better grasp of how these things work. Often, people don't realize their conceptions were wrong until they get let go.

That she worked tirelessly, was well liked does not matter. That in this short life we have, that she skipped vacations to devote more time to the company does not matter.

You said the person above her is not smart but he clearly is - he is higher up and survived and she is lower down and was cut.

Insofar as it being healthy for these companies for him to be there - him being there is in the nature of the corporation and perhaps its intrinsic infirmities, just as it is intrinsic to relations of production under capitalism.

One would hope that something as dramatic as not only him being over her, but him staying and her going would disabuse you of these notions. Especially the idea that she had sone kind of relationship within the corporation where working tirelessly and skipping vacations would engender any loyalty on the part of the corporation's higher managers and owners.