Are they? It seems like a lot of people are concerned that other people, not in evidence, will be concerned.
"We can't have a revamped Slavers adventure, because there's slavery!"
"Well, yes, they're the bad guys. We will stick swords in those slavers."
"Yes, but we can't have Dark Sun back, because there's slavery in that!"
"We also promise to stick swords in those slavers as well."
"Well, it might be offensive!"
"What, the sticking the swords into slavers part? Who's going to be offended by that?"
"... the slavers?"