It's tricky because there are words and there are actions. Would any of them enslave a human and abuse them for kicks? Most likely not. These were things said to people they trust. Would they say these things in a speech to Krakoa as a whole? Probably not, except for Erik of course. But even he calmed down that mutant child who was getting all worked up and said he wanted to fight. So no, I don't think any of it is being glorified on Krakoa.
As for Dani, the best way I can relate is with my home country. A ton of corruption, lots of crime, cheating and stealing. But I love who I am and where I come from, and I wouldn't throw away my own cultural items because I don't agree with the direction of the government, you know? Plus that's assuming Cheyenne history only includes humans - maybe there were some mutants too.