It should just be universally required to give an option to disable addictive features. Should prevent age verification, and giving users optionality is always a good thing (for them).
I've been using it for about 6 months. Very, very good - especially paired with anna's archive.
IT IS VERY FRAGILE! The eink screen on my first broke while in my backpack. The company is generous, I bought a new one and they gave 35% off and included all accessories (reading light, case, extra protectors). Highly recommend.
True it is pretty dated. OP was requesting resources that cover *all* of physics and Landau popped into mind. Is there a modern series of textbooks that offers such a broad coverage?
Road to Reality is good to get a general overview of *everything* but I dont think you can actually learn the things he talks about. For example, the jump from calculus in R^2 to Riemannian surfaces is insane and leaves a ton out