Irrespective of which organisation for which an individual may work, if he/she feels so intimidated by management reaction to his/her reporting unfit for duty when not adequately fit to perform that duty, then that is a fault of the management culture, not the individual.
We saw this in the military some years ago when errors and mistakes would often be concealed or played down in order to avoid incurring wrath from on high. On occasion that led to serious flying incidents, if not actual accidents.
And that's all I have to say about that.