Not liking something isn't the same as calling something crap. Not that I care what anyone calls anything, by all means go ahead. But if you're using the point you mentioned as justification, that's not going to work, sorry.
It was a joke for goodness sake, I didn't call the genre crap I used the anology of being able to make the assumption that crap tastes bad without eating a lot of it.
It was some toilet humour, and because of the pedants on this forum I wasn't going to say brussel sprouts and risk some smarmy person saying "I like bruseel sprouts, that anology isn't going to work. Sorry".