(a) A person may not be appointed guardian if the person's conduct is notoriously bad.
(b) It is presumed to be not in the best interests of a ward or incapacitated person to appoint as guardian of the ward or incapacitated person a person who has been finally convicted of:
(1) any sexual offense, including sexual assault, aggravated sexual assault, and prohibited sexual conduct;
(2) aggravated assault;
(3) injury to a child, elderly individual, or disabled individual;
(4) abandoning or endangering a child, elderly individual, or disabled individual;
(5) terroristic threat; or
(6) continuous violence against the family of the ward or incapacitated person.