All LEDs are backlit, and a full 1080p on a 7 inch LED screen is a dogshit reading experience that will make your eyes bleed in about 2 minutes. If you manage to find a terrible OLED at a low price, it’s still emissive and still absolutely terrible for reading.
Free is obscenely overpriced for using a budget LED tablet as a reading device. It’s terrible and has nothing going for it. Don’t pay a penny for a device you intend to read on with any display that isn’t epaper. You won’t read on it because it will be a torture device.
Mostly audiobooks, 2x speed, a lot of hours a day. I do use an ereader sometimes. I’ve started collecting (just regular hardcover, mostly) physical copies of some of my favorites, but I don’t really read them like that. When possible I read entire series from beginning to end consecutively. Audiobooks and visual reading are generally different books.
Mostly mystery, in a wide variety of settings, tones, levels of intensity, but some pure fantasy. Nonfiction is mostly psychology, but some science, other stuff as well. (180 new books this year), but I re-read as much as I read new. I don’t set goals or anything, just use the “goal” to see the number each year out of curiosity.
Mid-30s, IDK. I read a bunch as a kid, then stopped the habit through high school and college and took a while to get back into heavy reading.