Yea, unironically the droid slavery is the only thing outright evil that they openly ignore. Though in defense of its portrayal, I'm not sure droids were originally intended to be seen as fully conscious. See: all the droids that have no way to communicate and very much act on programming more than any concept of free will.

Their portrayal as intelligent to the point of self-awareness was more of a consequence of making C3PO and R2 fully fleshed out characters for the narrative. C3PO arguably should be emulating personality anyways, but there's no reason R2 had to have nearly as much of a personality as he ended up with. IMO, they originally weren't supposed to be conscious enough to have self-determination.