Is the restaurant inconsistent, that a day or two each week the food is markedly lower quality than the rest of the week?
I don't think anyone could convincingly argue that any restaurant gets it right each and every day. . .there simply will be off nights. Does it happen more often at WCC? I can't say that with certainty only that the two times we went nine months apart we weren't captivated.
As several have implied on here (and it's an obvious statement to make though I'm gonna do it anyway!), each person's tastes varies as to what constitutes good food. I agree with
bicker that you have to make qualifications for certain foods in certain restaurants. I always chuckle when someone complains about a chicken or steak dish in a seafood restaurant or, conversely, a fish dish in a steak house. Further, what floats one person's boat about a certain food may get scowls from another or apathy from a third.
For example, let's use the BBQ at WCC. For me
personally, I find it bland and too saucy. Others love it, and I'm not going to say my taste experience is any more valid than another. What I will say is that I have lived in Texas, NC, and VA among other states, and each has not only a particular style but
subsets as well! Over the years, I've come to appreciate the all-day-and-all-night smoked version of BBQ with sauce on the side, especially beef brisket. To true aficionados of BBQ (and various national championship competitions), that is the ONLY real BBQ--the other is simply meat smothered in sauce. However, to millions, the saucy version is what makes great BBQ. And I'm not going to disagree with their views because they are just as valid as mine. It's sort of like the old saying, "I'm not sure what art is, but I'll know it when I see it." Taste is like that, too.
I can look beyond average fare if the service is good or if some other factor makes the experience a pleasure. On occasion, I eat at a local buffet where the food is quite similar to cafeteria food--the fried chicken is excellent, the rolls homemade, but the rest of the food is bland. . .still, I like the buffet because it a) hits the spot, b) is quick and convenient, c) is cheap, and d) has attentive service. In my two trips to WCC, I have encountered neither good service, or extra pizazz to increase my enjoyment there, nor exceptional food (for my taste buds). Thus, with all the other possibilities that exist at WDW, WCC gets put on the bottom of the list for now. Such a designation doesn't invalidate anyone else's honest opinion, but it does serve as a counterbalance for those wanting the entire gamut of opinions.
All of that to say, to each his or her own.
As long as we do compare apples to apples--like restaurants to like restaurants--then it really should make no difference what another thinks if you like it:
"
One man's ceiling is another man's floor. . ." 
, I wouldn't say Whispering Canyon's food was as good as, say, Prime Time, but Prime Time's food is uniquely excellent for the price. By the same token, the food at WCC was better than the "good" food we had at LTT, and much better than the "good" food at Garden Grill. On the other hand, I wouldn't bother comparing the food at WCC to the fine cuisine we enjoyed at Chefs de France, Brown Derby, or the incomparable Artist Point. That would be just silly! 
He got 'angry' with them for not (I quote) "getting up and getting their own dessert, after all the kitchen is right THERE" (next to them). 
They were mortified, I've never seen anyone blush as much as the mother of the group. But they laughed 
The same server went and got their desserts and came back out wearing a huge dinasour hat about two feet from the top of his head - what made is extra funny was that he looked totally non-chalent and almost grumpy wearing it. 
