The Chevy SS wasn’t meant to be a high seller. Nor was it supposed to be super flashy and exciting to look at. GM didn’t advertise it beyond NASCAR because it didn’t need a demand for it.
Australian car production was at an end and GM had to export a number of cars to North America. So GM went the easiest route possible. Take a platform that was already there, use up the remaining parts (LS V8's included), and sell it as a niche market car so that you don’t need to make any more than you have to. Boom, Chevy SS. The only reason why the manual was even offered was because they still had some on the shelf at the end of the day and needed to liquidate the assets.
So, in short, quit complaining about it and just be thankful that they picked the Commodore HSV Clubsport to be the SS over here.