No one is going to be impressed if you burst into tears during a code review. They're going to be a lot more impressed if you bullshit your way through with positivity and can-do.
This is irrespective of the quality of the code.
This culture rewards overt displays of competitive individualism and punishes weakness irrespective of actual productivity, value, or objective performance.
Generally, being confident gets you breaks, even if you're astonishingly incompetent or just plain manipulative and dishonest.
Sometimes there's pushback from the surrounding culture before something goes horribly wrong - but just as often there isn't.