I would agree with you. There's no point in the statement I can see unless one is about to make a prejudiced remark. I'm happy to be shown why I may be wrong.
You're tone policing. It's not actually taboo opinions you are trying to censor; but opinions that you don't think are "right-on" due to talking in a way that you think is outgroup, that belongs to the people you despise.
I could easily say that in response to a claim that white people invented slavery, in total innocence that somebody would read me as racist. I am somewhat naive, in my defense.