Why do feminine scents of soap always have to be sweet or fruity?

Because the basic girl likes those scents. These are the pumpkin spice girls in my opinion.

The idea of what is feminine (unless you are talking biology) is largely arbitrary and evolves and varies a lot over time and culture.
Guess right now to be femme is to be an orchard/flower garden.

I like "masculine" earthy scents myself.

I can't say what Caress soap smells like ... but I love the fresh clean aroma and it stays with you for a long time !! 🤭

I dunno, just a popularity sort of thing? association of 'sweetness', maybe?

Like black dirt or like pine trees?

you should get some sandalwood soap.

i like my cucumber glycerin soap.

It only makes sense to smell like wood if you have wood.

Yeah I kind of like the herbal aromas, rosemary, mint, etc.

I love rosy scents! Or Liliacs.