Why would women be worried?
After all it is obviously easier to make a MaleBot than the more complex FemaleBot. As a result it will be the male robots that enter the marketplace first.
And, as proof, I offer the fact that simple hand held prototype MaleBots are readily available from Amazon. Shipped in 2 days if you have Amazon Prime.
because so called sex-bots would take all the control from women have over men.