I guess I don’t really understand the wing thing in this application. On an airfoil section, angle of attack is just about everything which is why we used AOA extensively tuning the flight envelope.
You put a wing on a bike that is somewhat “tuned” as a manufacturing consultation what’s it tuned for? If the wing is fixed then it is not “tunable” so bike angle now changes AOA. You do anything to the setup or rider weight that effects bike angle that deviates from the tunnel tune then your effective AOA has changed and your wing now produces different results.
So my initial thought was, if the bike geometry is going to change with each individual rider and your airfoil is not adjustable then, under most considerations, for most riders, on a street bike, it’s a gimmick.