If you truly think that a person can't be honest and trustworthy, while simultaneously being strong and confident, then I really don't know what to tell you. Disclosing hard truths doesn't mean being "weak and uncertain".

I know workplaces aren't democracies, but there's no question that I'd vote for the straight shooter (even if their own position in the company is weakened by that trait) over someone who plays the political game well but lies to their reports.

Hell, I would vote, with my feet, if I had to.