Oh, I knew it would get crazy fairly quickly!
I think the "wash-your-towels-after-every-use" people are almost certainly the same ones who believe that you also must "deep-clean"* your entire house (including the upstairs rooms) before you have people over for dinner (a thread a while ago that had me truly flabbergasted - as I thought the whole point of having people over for dinner was to socialise, & have fun & interesting chat with friends over some lovely food & good wine ...).
*Also, when did cleaning become "deep cleaning"???
It depends on several factors like length of wear, what type of garment, how active I've been, the weather etc - but unless they are dirty &/or smelly, then almost all clothes (except pants of course) should not be washed after every wear. It's not just wasteful of resources, it reduces the lifespan of your clothing. It's good to see that this advice is now being included on some clothing websites of late.
I have hooks on the back of the bedroom door for dresses, skirts etc. A chair in the corner (mostly used by my partner). And a large trunk at the bottom of the bed (irrelevant aside - it's an old luggage trunk that came from the Aquitania liner). It currently houses all my high heels, which I no longer wear but can't quite bear to get rid of quite yet! And tops, jumpers, blouses etc get flung in a pile folded neatly on top of it for another wear (or two/three, depending on the above factors).
I don't put things back in the wardrobe as I might forgot about them, & even slight traces of body oils/scent can attract moths. I have had to battle the little bastards before, as I have lots of cashmere/silk/wool etc plus a penchant for vintage - so my wardrobe could be a great big picnic ground for them & I want them to remain eliminated!
(Yes, I'm definitely a slattern 😁!!!)