BS or not, my advice, fwiw, is to try it. I put Heresy II's on stands which were a little less
than the 6" of the floor that was recommended to you. Initial impressions were less bass, but, sometimes
less boomy bass. It was a compromise, but overall i liked it and kept them on stands.
I see a lot of questions on the forum, which to simplfy, say, should i try this? My answer, is hell yes,
try it and see how it sounds to you (in your listening area).
In my meager experience, the two biggest variables to obtaining fidelity is your speakers and your room.