Well that's just it. I think the distinction is structural vs non-structural, because that is what affects the behavior and feel the most. My view is that since RMC is touting the advantages of topper track because of its structural function, it's no longer a wooden track. More subjectively, based on riding the Riverside Cyclone, the feel on those sections of track did not resemble that of a wooden coaster.
By contrast, the thin steel pieces on top of traditional wood coaster track serve the function of merely distributing the load into the wood track. (Smoothness is probably one of its functions, too.) In any case, that steel is non-structural and would not behave the same way without the wood beneath it.
I would consider a ride that truly uses both (Riverside Cyclone, for example) to be a hybrid because there are distinct sections of each. But if a ride is entirely topper track, you'd have a hard time selling me on anything but calling it steel.