If an employee blows the whistle on some sort of wrongdoing and causes some inconvenience for the employer, discipline is actually justified in that case, especially if the employee is mistaken, even if they turned in the circumstances without any malice and with the best of intentions.

Can we draw the following conclusion?
if an employee blows the whistle on some sort of wrongdoing and causes some inconvenience for the employer, discipline is never justified in that case
No