The voting process may not have been implemented perfectly in the past, but certainly it does not have an exclusionary bias.
No problem . You didn't say there was a bias; I just wanted to clarify. The waiting period is only 3 months.
I'd go a step further & suggest that people can nominate for both, but if they win in both categories then they have to pick one role, & whomever was runner-up takes the other. (Assuming there's enough suitable runner-up candidates who can & want to step-up of course) Most users offering to fill these roles are already very busy in their "real lives", they're going to struggle filling one of the roles effectively let alone both.