False. If you go slow, there is a controllable bounce going on. As you speed up, it's a little less controllable until you hit that point where you're skittering across the edges of the steps. Then it's really smooth. If you haven't hit that smooth "washboard" feel when you're blasting stairs...you haven't gone fast enough yet. IMO...the faster the more controllable.
OK - I can sorta understand speeding up - BUT - how do you then slow as you approach the bottom of the steps? MY OTB occurred when I noticed, part way down a curving set of 1' drops, that there was a 210 degree switchback at the very bottom of the drops. I had to shed most of my speed to try make the turn but when I did slow I let the handlebars start sawing back and forth and eventually went OTB - much to the amusement of the onlookers.
How do you slow while riding steps or a long series of small drops?