Reading itself isn’t what’s important, it’s mental stimulation that is. And more importantly stimulating different parts of the brain.
It’s important if you want to understand how the world works on a deeper level. There’s a reason that all scientific research is primarily presented in the written form.
Although I assume OP is talking about fiction which is a different matter.
It works, but it only works on Linux so they don’t advertise it. You may need to update the firmware to get the best experience too.