When will all the experts factor in the smart PCMs (Powertrain Control Modules) that are now in todays vehicles?

Lets just run a few months/tankfuls and see if anything bad shows up. If these M112 motors are so 91 octane thirsty, I shudder to think about all the fuel tanks out there that have the wrong grade in them or have a high moisture content suspended in the fuel. Surely 2 points under the RECOMMENDED octane can be automatically adjusted within the PCMs parameters? Because if it cannot, the 2 points ABOVE the recommended 91 octane must hurt as well. All I see around here in the southeast, is 87, 89, and 93. I refuse to put 1/2 of my fill 93 and the other 1/2 fill 89 (89+93 devided by 2 = 91. That would be absolutely crazy!

After a couple of tanks, I'll hook up the OBDII and see if any DTC's are reported!