The food at Whispering Canyon is fine, nothing special. I always laugh when people post that food at any Disney restaurant was "inedible". We've been eating at Disney for many years and that is just ridiculous.
The worst of Disney dining is on par with chain restaurants (Fridays, Applebees, etc.), which is obviously fine if that's what you're looking for on that particular day. I'd put Whispering Canyon in that category, as far as food goes. It's a fun place though.
The best of Disney dining can be quite good - you'll even find some very refined dishes on some menus if you look past the obligatory steak or mahi-mahi dish, which every restaurant seems to have. Artist Point is definitely one of these places.
Anyway, have fun at Whispering Canyon. I promise you won't gag!