I just meant eventually you will need to feed organ meat, and I have never seen any variety of organs at Whole Foods besides maybe chicken liver and that's about it.
I have never been a big fan of ground as a diet staple since most others who feed ground here, usually supplement it with added vitamins, and it has to be mixed in a certain proportion, etc. I'd rather stick to Frankenprey. I find the cats enjoy the experience of eating more that way (tearing, shredding, etc.)
However, having said that, ocassionally I do feed ground beef, and my cats have never had a problem eating it, but it's a very small portion of their diet; every now and again.