I've heard this lame argument for years. And it's the fact they lean heavily on MK for those millions and shut down half their resorts they can't fill.
Yes, people are still going to go, and yes, the other Disney parks (and UNI) are experiencing explosions in attendance while WDW stays the same, as TDO tap dances to a parasitic business theory to keep those numbers level without investment.
At worst, this response is the worst thing you can give TDO. Blaming the guests for actually caring enough to be upset about the park they love, enabling the worst aspects of TDO. You wouldn't be getting anything of significance in WDW had they not been forced to do it.