I'd be surprised if he wasn't.
Can you imagine how stressful his job is ( and how much his own incompetence has increased it) and how that would lead to depression or bipolar disorder.
The only way a normal human could do that job without getting stressed and depressed would be if they kept themselves in a state of complete denial.
So the question is: can someone do the job under the influence of anti-depressants? Or should someone who can do the job without be allowed to?