This is asinine. Apple has shown a strong commitment to supporting particular standards for extended periods. For example, the iPhone's 30-pin connector was maintained for over 10 years. Similarly, the Lightning port, its successor, has also been around for about a decade. (And, it should be noticed, started being used two years BEFORE USB-C existed.) Additionally, Apple has supported the Thunderbolt standard throughout its life cycle.
Apple has always been judicious about the ports it adopts. The company is not known for having a plethora of ports catering to multiple generations of connector technologies. Instead, when Apple picks a standard, it tends to go all in. Take the case of USB-A: Apple was one of the early adopters of this technology and supported it for approximately 20 years before making the switch to USB-C. To put this in perspective, the time between the USB Mini to Micro switch and the Micro to USB-C transition was shorter than the lifespan of Apple's 30-pin and Lightning connectors.
It's unreasonable to assume that Apple would restrict the cables that can be used in a standard USB-C port. The USB-C standard is built on the principle of universal compatibility. Restricting this would not only break with the standard but also limit the very advantages that have made USB-C popular among consumers and manufacturers alike.
You don't have to keep repeating this made-up lie. While it's true that it only comes with a USB 2.0 cable, you don't have to buy a USB 3 cable from Apple. Any USB 3 cable will work just fine.