One, Theater Owner = Activision, Director = Blizzard
Two, there has never been talk about unfair advantage with the store mount in the entire thread so not sure where that is coming from. It's solely about breaking immersion and the perceived purpose of Classic.
Three, the actors should indeed have used the set wardrobe (aka only mounts that were in the original TBC) and The Director (Blizzard) could/should indeed have replaced them or punished them... but they didn't. Instead they removed the popular way to protest for anyone not wearing a red shirt, just like what is happening with /spit. Now if it were an amateur play then no one on either side has the right to complain or be subjected to punishment.
Thanks for actually trying and providing arguments despite the dismissive tone.