Given that the canopy itself modulates the moisture in the air, this explanation seems to provide a bound on the outlier of height relative to other trees more so than an absolute barrier.
The thousand character classic was also used to teach the reading of chinese characters in Japanese, Korean, and Vietnamese, though perhaps to a lesser extent than the three character classic. I have no idea to what extent this is true today, but it certainly held up until the 19th century.
Musk has lost a massive amount of credibility because of failing to deliver on most of the self-proclaimed potential of his businesses—basically, all of them outside of the potential of SpaceX, and even there he should be grateful the perceived value of the company isn't tied to going to mars.