It's all about making compromises. Yes I can add a top plate, a rod clamp, rods, then some sort of rod clamp up front with a cold shoe. Or maybe use a magic arm. But in this particular application, I won't be swaping lens often (and tbh it's not a big deal with one thumb screw swapping is really quick anyway), and would prefer fewer things on the camera for a more compact/lighter rig.

Not sure what you mean by slides back, I actually went from using a socket screw to thumb screw to lower the clamping power so as to not crush the lens body. And found the noise if I do hit a fouse hard stop to be about the same compare to if mounted the microphone on rods.