To be fair, the track record for mentally unwell people in positions of trust isn't great.

Before the most recent elections, people voted for an unwell person to lead the country. So it's not just someone can obtain the position, but that people actually chose to put one in office. Twice. Although, it was less well known on the first one.

"Saw a therapist once" =/= "unwell."

In fact avoiding therapy at all costs is a good sign of trouble.