Lol - I almost googled robotic sex workers in class... but then I thought better.
But I know of some articles recently that describe responses to the idea of replacing prostitutes with life-like robots. And I'm thinking from the get-go, sci's assuming humanity would accept robots/androids/cyborgs before Sex Sranc.
I agree that sex-tech will be more acceptable to use, in the way vibrators are something accepted into modern society.
But I also think humanity will go for the bottom line, similar to the exploitation of sweat shop workers. Most people will likely be happy if sex tourism relegates these sex subhumans out of sight, out of mind. Imagine living toys who want to be fucked all the time, who don't complain about being kept in kennels? Somebody is going to make a buck off that and I think society will find a way to reconcile itself with the reality.
Witness the growing acceptance of prostitution. Not that I have a problem with it's legalization, but what seems to be the case now is that sex workers are people men might fuck when they are younger before they settle down with "acceptable"/"respectable" women. It's more okay to
fuck a prostitute than
be a prostitute - same as it ever was, but the former is seen as less and less of a problem.
I'm also not convinced the growing acceptance of men using prostitutes has resulted in increased workers' rights for sex workers.