By promoting the theme park experience of people owning other people.
It is really sad if you believe it is a "theme park experience". Then with the same logic we couldn't play games set in the second world war against the nazis, or in the American civil war for the fight against slavery. Can't we play "the Mask of the Red Death" because the British empire did a lot of horrible things? Are we going to cancel "GIJoe: the American hero" because people from the real life suffered terrorist attacks? Or a episode of "Law&Order" where the criminal group catchs illegal inmigrants for forced works. Are we going to cancel all old far west movies what showed Northamerican indigenous?
Are we being too frivoulous, or are you being too radical and extremist?
Do you believe all the movies about the Spanish civil war are a "theme park experience"? There is a movie about the Cristero war in Mexico for the begining of the XX century. Should this be cancelled? Crime in Detroit is real. Are we going to cancel the cartoons of Robocop? There is a Spanish movie "Un Dios prohibido" (a forbidden God) about the seminar of Barbastro, completely terminated for the Spanish civil war. Are you going to say it to be a "theme park experience"? Do you say to be a "theme park experencie" the movie about the crusades "the Kingdom of the Heaven" or "the name of the rose"? What if a Blackafrican in front of your faces says the movie "the Woman King" should be cancelled, because in the real life the Dahomey amazons not only were practically slaves, but also they launched raids against the neighbours to catch slaves. That movie tells them to be anti-slavery, but this is totally false.
Do you say to be a "theme park experencie" the slavery showed in other D&D worlds? For example the scarlet brotherhood in Greyhawk, but also the gnolls, the drows, the illithid, the duergars..
Would you say "theme park experencie" speculative fiction about future distopian dictatorships? For example cyberpunk or V of Vendetta. Let's imagine in the next two years there is a new expansion of New Capena where the citizens start a rebellion against a new dictatorship, and one of the first actions by the resistance is to free innocent people (for example soldiers prisons of war who tried to stop the invasion) punished with forced works (practically state slavery). Would you ask the cancellation?
My ancenstors knew what it was to be attacked by pirates who searched slaves. Someones say there were more Europeans slavered by the Muslims than Blackafricans sent to Northamerica. Should I hold a grudge against Turkish people because Otoman empire did horrible things? The famous pirate Barbarrosa was not English, but Otoman. Didn't you know it?
If I was a child whose pet was brutally killed by a mad man wearing a jacket with the logo of Oakland Golden Grizzlies, should I hate all the people who wore a jacket with the same logo?
Do you agree about the censorship of the teleserie "Dukes of Hazzard" because the car showed the confederate flag?
Should be cancelled the 1939 movie "the Real Glory", with Gary Cooper, about the moro rebellion in Philipines?
Is your criteria based in the good sense?