Agreed. We use sexy same way in dutch (we use a lot of english words, and sex is a dutch word so sexy also feels dutch). But first of all, it's still not something official, and not often used in professional settings. In german, Geil has become the standard way to say "cool" or even acknowledge something.

At the same time in Dutch, we use it also, exactly the same word "Geil" with exactly the same sexual meaning, but for us it has a bit of a dirty feeling.

I had conversation with Germans: "oh that means horny for us", they: "yeah for us too".

As well as I find Horny in itself a bit more invasive then sexy.