No, that’s clearly not the case, as they’ve reprinted the crap out of Ratz over the past decade or so, and that’s the other Nabisco die cut, as well as creating dozens of new parodies of a ton of their other products (Oreo, Chips Ahoy, etc.)
As well, Cracked has been released as a mini and sticker with SI.
I think it’s really that Topps had a quality scan of the art for Ratz and they don’t for Cracked. A reprint would look substandard.