Power Steering Pump problems of the 2007 Acura MDX

My 2007 Acura Mdx is experiencing a common problem with the power steering pump. Acura issued an extension on the warranty for this issue, but that extension only lasted seven years. As someone who acquired the car after 2014 I was automatically not qualified in this common problem. Acura has issued a recall for other model cars built in this same year using the same power steering pump. Yet the recall NHTSA campaign 12v222000 does not include model Mdx. I would like to know "why" Mdx was not also part of the recall seeing as though it is the exact same symptoms, and parts used for the power steering pump, hoses, and seals.

A whining sound is being discovered from the power steering pump/rack area after 30 minutes of drive on highway then slowdowns to the streets. The whining noise gets louder when turning the steering wheel to either left or right (not necessarily all the way). The noise go away after stopping the engine for a couple of hours. Diagnosed at the dealer, found to be a defective part - power steering rack (53601-stx-a01).