Oh, I've tried e-readers and I hate them
To me, e-readers are fine for general casual reading, but actually more often than not the kind of reading I do is more than casual, kinda scholarly / academic (some will say) as that is my training. So it can involve not only markup but copying and pasting over to Scrivener or Obsidian to write up notes and my own remarks.
I can totally see e-readers used for leisure reading but I think academia training has "ruined" that kind of reading for me for the most part. Heh.
Luckily, the other features of the iPad don't generally distract me from solid reading.