They did mention the multi-day ticket discount, twice in fact:
“We continually add new experiences, and many of our guests select multi-day tickets or annual passes, which provide great value and additional savings,” Wahler said.
Disney says it has made an effort to keep its gates open to all, offering -packages such as multi-day tickets and yearly passes to help balance out the costs.
Though I agree they could have mentioned the free dining program or value resorts or their sales. But, even the word "value" resort is somewhat of a laugh, when you consider the rates can get as high as $165-200 a night.
But I'm curious... how do you know they are middle class families that you are seeing? I mean,
really? Is it by their clothes? Their stroller? Their hair cut? Do they walk around with a sign that says, "We make $65,000 a year."? You have no idea what income you are seeing. Because lemme tell you, even when we lived at the poverty level, we still "looked" what I'm assuming you consider to be middle class. You can get some great clothes at thrift stores, thanks to a hand me down stroller, I had one of the "Cadillac" strollers, thanks to my mother in laws trip to Chinatown in NYC I have a beautiful knock-off Gucci purse. So... you have no clue what others make. lol. And to be fair, living in a rural farming community, I know some people with VERY deep pockets, that walk around looking like they oughta be living in the Hillbillies shack.
Per the article, considering that the average Orlando tourists income is $93,000 ($20,000 above the national average US income, with low to average middle class considered to be $32500-60000), it's pretty safe to say that the majority of travelers are upper class income and upper middle class income. Not low middle, or low income.