Top of their fields are still human. They have flaws just like the rest of us and the ones who can boast continuous ethical integrity throughout their presumably long careers are very few, if any.
Even though they are the best in their line of work, no domain is spared by deviant interests such as corporate, political or even personal.
And though unlikely the average person will unlock the secrets of the universe, it's still possible, even if they won't realize it at all. Dismissing the plausibility fully is in itself a flawed decision made in part by our own lacking abilities overall.