Not supporting a platform is completely fine. Purposefully hindering performance when it is proven that the software runs well on said platform is one of the shittiest moves a company could make. I wonder to which other products they do the same thing, especially on places where evaluating such behavior is not as simple as changing the contents of a string.
"Help! My compact got stuck in the snow"
"Buy a 4x4 and replace the wheels with tracks, that will get you going anywhere"