Many people (I'm one of them) really care about good user interfaces for a consumer electronic device that they interact with frequently. I note that Apple now has the largest market cap of any tech company due to the care and attention they lavish on their device's user interfaces. They're clearly doing something right; their latest quarterly profit was more than Google's yearly revenue. BTW, lest some idiot call me an "Apple fanboy," (an infallible sign of a weak argument) let me say in advance that though I've been a Mac user since 1984, and own many Apple products, I'm also a professional tech writer with more than 40 books to my credit, and I'm equally fluent in writing about Windows and other operating systems. Some of my most profitable books use Windows screenshots for cross-platform products, because more of my readers use Windows.
I write professionally about UI, and for a DVR, the UI is way more than "just a way to tune in a channel," as I think was said above. A good UI is extremely important, for many reasons (don't believe me? Go look at RIM's fall because the BlackBerry still has a crappy interface). One of those reasons is customer satisfaction. The Comcast DVR I briefly had sported perhaps the worst DVR interface I've ever seen, and caused me to switch to Dish when I made the jump to HD.
The OP quite reasonably said that he was sold one thing and received another. That's a legitimate beef. He's an unhappy customer, and deserves to be supported in this community, not ridiculed.
After having owned the aforementioned Comcast DVR, a TiVo, multiple ReplayTVs, and a variety of PC-based DVR solutions, plus related devices like the AppleTV, and having used U-Verse and FiOS, I think I have more than enough experience to opine on DVR interfaces. Frankly, the 722 UI is merely a decent entry in a pretty weak field. It screams late 90's design sensibilities, and was obviously made for SD. Its VOD interface is god-awful. It requires too many key presses for simple functions. It hides useful features deep in menus. It's ridiculously slow. Still (and incredibly, given the widespread UI awareness from people who own iOS devices and other modern smartphone OS's), it's very stable and is the best of a fairly lame bunch. That's why I've stayed with Dish.
So if the OP was shown and was expecting a reasonably modern interface like the 922, and was surprised with the clunky 722 interface, he's entirely justified in his displeasure. Dish should make things right.
As for me, I'm more than looking forward to replacing my 722 and 221 with a Hopper and a Joey. A fast, modern UI is as important to me as the whole-home solution, and I'll be happy to get both in a single upgrade. Though I'll also admit that I'm going to let some of you folks try it out first and hear your reports. I'm happy as a clam that I skipped getting the 922.