I was reading somewhere that some of VFT cultivars are not producing seeds. Could be wrong though.
I think what you probably read was that cultivars can't be reproduced through seeds. Most cultivars need to be reproduced through vegetative multiplication in order to preserve any characteristics of that particular clone. If you get seeds from a cultivar, while it might have some of the characteristics of its parents, it will be genetically different than the parent and therefore likely not have the traits that the cultivar was registered for.
However, all flytrap cultivars can produce seeds, except perhaps 'Wacky Traps'. It seems to have a deformed stigma and is unable to be pollinated (at least no one has successfully pollinated it to my knowledge). Also, I've not gotten seeds from a 'Cupped Trap' plant yet either.
Leave the meat for our pet plants