I'd go further than that... they don't WANT people complaining. Word of mouth can be the best or worst advertising for a business. They don't want the word on the street to be negative. As long as they continue to offer a quality vacation, they can count on positive reviews between friends and family. When people I know and trust start saying their vacation wasn't that great or I see the overall quality drop -- I'll pay attention. But it's going to take more than hyperbole and that's mostly what we have here.
No company wants to hear complaints in 21st century America. Companies would rather people just go away (largely, obviously not every company in every situation) than complain, even if those complaints are legit and help the company in the long run. That's why you have companies that now actively black-list and even ban customers (read something online recently about Bank of America doing so) who dare complain. And I am not talking about chronics, who always demand freebies and always have issues. And let's not even get into the way some, like Disney, are using Social Media to get customers who think with a herd mentality.
And I, until the past 4-5 years ago, always told friends, family, coworkers, strangers etc to visit WDW (even though I knew it wasn't what it was supposed to be or used to be or could be again). I don't anymore because I think it's fallen to a point and the prices have risen that I can't tell people to give Disney their dollars in Florida ... although I still regularly shill the BRAND when it comes to Anaheim, the DCL (especially the DCL!) and the international resorts (although that may change with Paris if it doesn't get its act together soon!)