Before you try to insinuate that what I said was stupid, you should try talking to a chef, a food critique, or anyone else with a very good palate. If you know what you are doing you can absolutely taste the difference between a cow that has been grass fed vs one that has been grain fed. There is an Iowa farmer that feeds his pigs acorns and other nuts. The meat is extremely high priced and highly sought after because of the unique nutty flavor in the meat. But I guess if you have only eaten cheap fed beef, trough fed pigs, and boxed mac & cheese then you won't understand the differences in taste.
Similarly I can taste the difference between a spring, summer, and fall bass. Spring they taste great, very mild and just fantastic. Summer they get the weedy taste at times, but out of open water they are still good, the texture can be a little soft if you don't bleed them and get them on ice immediately. Fall bass taste like shad (if you have ever eaten a sammich after taking a shad off your hook you know the taste!).
I guess that's why people say there's no taste difference between a porterhouse and a sirloin and that they all taste like "steak". You have to be born with the ability to disearn different tastes in what you are eating or you will never understand and will never pick up on the "you are what you eat" saying.