Bike porn

It's no better or worse in that respect than any other rack that turns with the front wheel. The problem, as discussed back in the 12th Century when it was first posted here, is that the weight of your payload is trying to rotate the bars in the stem clamp, among other things.

I reckon there's a good foot of leverage on a big set of BMX bars and they're pretty hard to shift in a good stem + they're only 7/8" at the clamp. I reckon you'd have to have quite a load in there no?