I'm not sure that "true" is exactly the right answer, but, for all intents and purposes, yes.
From a business standpoint, an AP is a bulk-purchase of a product at a major discount. Day tickets are paying full price. I disagree that it's "shady" to give priority to the people willing to pay full price - that's the standard for most business operations.
That's why the blackouts are there. Disney is using APs to sell excess (less-desirable) inventory at a discount.
The main reason that people think APs are the higher tier is marketing - Disney wants people to think it's a bigger deal. (It's also because of the amount of money they've personally spent - it feels like something important that deserves "respect".) But if they really did the math on what a Key gets you versus what it would cost to go to the park even a quarter of the time it's valid - that's thousands dollars of difference.
APs often know all of the tricks, too. Like, if you're only going to go once, are you going to have any idea how to get a reservation to Blue Bayou? At the end of the day, it evens out.
That doesn't mean that Disney puts them a
much higher priority. But, yes, a higher priority.
And,
personally, as a fan, I think it's
morally the right thing to do. If someone's going to
Disneyland "only once in their lifetimes", I want them to have as much priority as they can get. I've done it all, multiple times - I want them to experience as much of that they can. I'll come back tomorrow.