I know about Electrified Garage, and if you watched RichRebuilds or talked to any of the guys there, you'd know they agree with everything I've said.
Why would consumers want a dealer in the middle? Because dealers give deals, often selling vehicles BELOW MSRP (something that cant happen when buying direct from the manufacture), you can get a car the same day instead of waiting after you have bought it (sometimes even MONTHS when buying used tesla's direct from Tesla) and the vast network of dealers gives easy access to maintenance and service, something tesla doesn't have. Your comparison to Apple is wrong too because they do have "dealers", e.g. Walmart, BestBuy,B&H, ect. That also have the ability to repair Apple Product as Authorized Apple Service Providers. These Stores/Dealers are also able to offer Devices on sale below MSRP
CarPlay and Android auto is pretty much in every new car because it's something consumers want and frankly its a better experience than what Tesla's Ui is purely because the hardware is better (Tesla's Ui is laggy especially when in maps). Tesla doesn't do what the consumer wants and thats the problem with them, not withstanding the quality issues they have.