Colloquially, the word "robot" always implies a certain amount of anthropomorphism. So no, I don't think a vibrator would count, as basically no vibrators on the market try to look human-like.

But that definitely is a weird difference between male and female sexuality - the sex toys women buy most are the very effective and utilitarian ones: Vibrator wands, Rabbits, Air pulse Vibrators etc.

While the most popular tools for men tend to focus on "realism"(?): Fleshlights, Sex Dolls, things like VR and POV porn. And I guess sex robots would fall into that category too in the future.

I can absolutely see the weirdness-factor of someone who is desperately trying to emulate a partner rather than just accept masturbation as a solo activity and optimize it from there 😬