I have to wonder how many SLR owners actually adjust their rear ISO decoupler beyond it's initial setting. It's not like a dropper post where you can adjust it on the fly while riding. How many people ride an entire ride on something like cobblestones and adjust the frame one way, then ride completely smooth roads the next ride and adjust the frame accordingly?

The adjustability is useful so that a 250 lbs rider can setup the frame differently than a 150 lbs rider, but once set I bet my bottom dollar that the ISO decoupler rarely gets adjusted again.