That's being disingenuous to put it mildly.
I've seen LOTS of ugly comments on other sites complaining about the "PC brigade", "faux outrage" and people being overly sensitive about the Kunta Kinte joke. In fact I'd say that's the majority opinion I've seen being expressed. Your post that people don't have the right to dictate who should be offended is relevant in that context.
However, nobody here has said or even hinted at anything so crass. Pointedly starting your post with "a lot of people are saying it's not racist" is directing it at those of us who said that on this site. Firstly, I qualified my opinion by saying I may not be the best person to make the judgement that it wasn't racist, and secondly I admitted it's an emotive and politically sensitive subject. Thirdly, I'd like to point out that while I'm white, my daughter and granddaughter have black/slave ancestry, so I'm sensitive to racism because it directly affects them.
Lastly, by qualifying your post with "im not slamming anyone, im just putting it out there. no hate" you're admitting that your words could be seen as doing just that!