No offense, but I think you're putting too much emphasis in your "knowledge of the industry" in a room of people who've been following every step (and obstacle) preventing us from getting the ultimate streaming box. The complaints aren't about how the services work, its about the experience of the product Apple created.
1) Bluetooth Keyboard / Remote.app Support - Apple can't control login procedures, but they can provide input methods that they already established 5 years ago with previous

TV's.
2) The AppleTV is 1yr+ delayed - This is the most common conclusion for why a 2016 device is missing things like 4k or even Apple's Force Touch. If this were a "modern" product then it would be ready for the future and unfortunately it already feels ready for an upgrade.
3) Siri - Anyone who has made fun of the Amazon Echo for its limited results should cringe in embarrassment at Siri for TV. We're pretty much limited to the commands from the demo and nothing more.
4) Apps - You say how Devs are so important, and its true. BUT... how can we put so much expectation on Devs and none on Apple themselves? Remote.app. HomeKit. Podcasts. Siri integration with iTunes. Missing 3rd party support is one thing, but missing 1st party support is silly.
Again, you're preaching to the choir here so theres no need to take a defensive stance on the new AppleTV because we all want the same thing. A product that matches Apples old "It Just Works" tagline. And if Apple didn't provide that experience at launch (after several years of delays) then it should be understandable for why people would feel disappointed.