Any notion of "psychological safety" is an absurd impossibility in most tech companies since:

- your boss can fire you at any time without cause or notice

- your project can be canceled on a whim

Since these properties are generally foundational and immutable (and usually codified in corporate governance as well as employment law, at least in the US) "psychological safety" cannot exist in any such organization for any rank and file employee (executives may be protected somewhat by contracts and golden parachutes). The only thing that can exist is a hierarchy of fear and power, and that is exactly what we see.