Which rule emulates the checkbox for controlling neutral units?
We already went through this with the introduction of the chess timer. During the discussion, Dirty said that it would not be mandatory in tournaments, but after half a year, all tournaments started using it, even though there was no vote on this. So, what they are writing here about making changes to the rules by a majority of votes – it hasn't worked that way for a long time.
By the way, how does the chess timer relate to classic mayhem? Which rule emulates it?
Technical enhancements are treated differently than changes to the gameplay. The timer is not part of the gameplay, in my opinion, but rather an organizational matter.