you can get an old ereader at a thrift store for about six dollars. usually they don't have a screen light, but that just means i go to bed on time. they're often rootable but i don't even bother, i just side-load epubs and keep any wireless off. online services are all eol anyway. i keep around a couple at a time and give them out if someone mentions they need a thing to read. the batteries all still last forever.
what's the advantage of a new device? somebody convince me.