What we usually call the speed of light is in fact the maximum speed of information propagation.
It is not about light, and you should think about quantum entanglement as a hidden variable, there is no magic there.
It could be nonlocal of course, but that would imply information moving faster than light again. Unless you count the entirety of MWI as "hidden variables", I guess?
What I am saying is that the hidden variable hypothesis is nonetheless a good mental model as a first approximation to reason about QE, say as a non-professional physicist.
People get confused, especially sci-fi authors, adding to the general confusion about anything touching Quantum Physics being almost magical/limitless or unexplainable. This is a lot more pedestrian in practice.
I very much doubt Ursula Le Guin thought we could build an ansible (FTL comms) any more than Larry Niven thinks the Teela Brown gene (heritable luck) is real.
It is a really tough topic to get an intuition for, though.
The main article attempts to explain why instantaneous “spooky action at a distance” is real, yet information can’t be relayed this way.
I'll show myself out