True!
But when we made the step also many people were whining about slow and a loss of power. All the complainers had totaly no experience running on 16%. I am pretty sure this is the same story that is happening now with the offroad, many people complaining w/o even tested/experienced it. I think if you ask guys like Drale Lutz Falken etc if they ever did run 20 or 16% to get a better milage then I think some will admit it.
I know from our 25% era that one Dutch guy who did win a national race and then found out he was using 16%. Beside that, in the onroad the use of 20 or 16% was well done if they need to run a qualification w/o a fuel stop.