There is nothing in the CRA of 1875 or 1866 about "segregation" or "desegregation" ...those arguments were not made in the legislation. There was no "ban of segregation" and only an absolute brain-dead moronic idiot would think that to be the case, given the fact that black people certainly were segregated after 1866 and 1875.
Thats kinda like saying:
"The First Amendment doesn't even mention the government. It has absolutely nothing to do with what the government can or can't do...."
Here is the important part of Text from the CRA of 1875:
Whereas it is essential to just government we recognize the equality of all men before the law, and hold that it is the duty of government in its dealings with the people to mete out equal and exact justice to all, of whatever nativity, race, color, or persuasion, religious or political; and it being the appropriate object of legislation to enact great fundamental principles into law: Therefore,
Be it enacted, That all persons within the jurisdiction of the United States shall be entitled to the full and equal enjoyment of the accommodations, advantages, facilities, and privileges of inns, public conveyances on land or water, theaters, and other places of public amusement; subject only to the conditions and limitations established by law, and applicable alike to citizens of every race and color, regardless of any previous condition of servitude.