Is this group necessary?

It may not necessarily imply physical touching. It may be someone that prays to god to save them from smelly feet.
It could be an old crow that sits in a room full of incense and thinks they see an angel.
It might be a musician that plays a note, gets a shiver and pees their pants.

Maybe just tactile talking

Lol…… may this be your biggest complaint about SW. 😅

There may things being touched other than genitals so to say that it's masturbation in my opinion, is incorrect. If a woman is touching just her breasts or just her thighs and nothing else, is that considered masturbation?

Not necessarily. There's many ways to touch yourself that's not even close to masturbation.

Isn't there a "wankfest" group too?

NSFW - Not Safe For Work and masturbation mean the same thing?