A majority of the Rondys involve shoting= a shooting match, is a shooting match, is a shooting match. If you go to the rondy and do not shoot you can stick a pickle on the end of the barrel and call it kosher for all anyone cares.
A committee sets the shooting rules and a committee has the ability to change them. The members of that committee are usually shooters, not historians.
Same thing with trade gun matches= many of the origional trade guns had rear sights. Just try to use a smoothbore with both front and rear sights at a trade gun match. They will not even let you have a high growned screw in the tang or a lump on the breechplug.
These decisions are not based on history, they are based on preferance and opinion of the people that set the rules for each individual shoot or rondy.
What I am trying to stress is that there is no national body of "history police" that make the rules for your club or rondy's individual shooting matches.
This is not a Period Correct=Historical Accuracy argument, it is a matter of individual club/rondy policy. If you don't like the rules of your club or the rondy you attend then lobby for a change.
I would personally love to see a rule allowing any historically correct iron sight. I still shoot 3 position NRA/International, Rimfire Sporter and hi-power and rimfire silouette but I quit compeeting with muzzleloaders years ago due to the sight rules.