Why do these women who advertise massages pose with no clothes on if they state 'no full service'?

I don't understand the correlation. Posing nude suggests one thing but then bam! no FS.

any ad for a product aimed at men.

It makes us want to buy that product.

Even if no FS, many massage providers will perform various popular sexual activites, and often perform naked as well, so I don't see what the concern is about.

it may be like one experience I had where she gave me a massage with both of us nude. I could touch her and massage her anywhere, but no insertion in any of her three orrifices. It did end happily for me thanks to her hands massaging jr, and her tits. She promoted herself as a massage, but no FS.