We live in different bubbles, it seems. I haven't heard that argument. I have heard that 'states rights' is intended to workaround various federal rules, including civil rights.
The foundation is that "all ... are creatd equal", which includes all members of minorities. The Bill of Rights is there to protect unpopular minorities from the majority. The majority can always protect itself by changing the law.
Edit:
> https://lawliberty.org/did-the-civil-rights-constitution-dis....
I skimmed through this. The source is anti-left; of course they are going to give characterizations like that. And look at this piece of doublespeak:
When I talk about civil rights, the reader should not get the impression that I’m friendly to segregation, or hostile to the civil rights movement as it existed for the whole of the 20th century up until 1964. In fact, I’m very much in sympathy with the claims to an agitation for equal citizenship that went on up till then, but there were problems in the Civil Rights Act that were not evident at first.
They won't say they are hostile to the Civil Rights Act and every solution to problems like segregation, oppression of minorities and women, etc. And they don't offer any other solution. They are "very much in sympathy with the claims to an agitation", however. :)