The "cheap" steel wheels is a dig at those persons who held up their nose because they had spent more money than the additional money that GM charged you for Rally wheels on your car with full trim rings; to buy a one piece cast aluminum "Mag" wheel from some company that never submitted their wheel for safety testing the way GM had to get the wheels certified.
Some of those two piece, even more expensive than a one piece cast aluminum wheel, that where all hand polished and triple chromed frequently broke while cornering. This is because the soft cast aluminum center was riveted to the steel outer wheel and the combination flexed so much so frequently that the aluminum work hardened and shattered at the rivet. This left you with a chunk of aluminum to finish your turn instead of a wheel and tire that often resulted in a near head on crash.
The Rally was used in road racing by the Camaro in TransAm racing and the Corvette in road racing (but with out the center hat and trim ring). I never saw a wheel break at Sebring or at Daytona while endurance racing. I did attend a funeral of an associate (thankfully not a close friend) that broke a two piece wheel and had a fuel oil delivery truck drive through the drivers side door on a busy public road.
In the fine print at the bottom of the last page of the installation instruction sheet there was a very small print disclaimer that stated bolting on their quality wheel absolved them of all responsibility as the wheel was obviously going to be used in off road racing from which they couldn't be blamed if you were hit by a big truck. That coupled by the fact that the company that made the wheel had their home office in New Jersey stopped any hope of a law suit to recover the burial costs, or pay off his new Camaro car loan.