Just checked mine. The only problem was with my VF-0S. I had the one post against the little bottom fin with 301 printed on it. The tip of the post sort of stuck a little but there was no damage. But it had only been on that stand in that configuration for maybe 2 weeks. I imagine if I had left it there long enough things could have been really bad. All the other posts were touching bare plastic.
I plan to keep using the stand but make sure the tips only touch bare plastic. What I saw supports the idea that there is a reaction between the tip material and paints of certain types. Washing it won't help if this is the case.
FWIW, I did just mess around with one of my stands and it's easy to pop the caps off. then you just have acrylic which shouldn't react with anything. Of course you won't get that sure grip anymore, but someone mentioned those little nubs you can buy to put under the legs of furniture to avoid scratching. Maybe just stick the small ones to the ends of the acrylic pipes?