Ah, e-readers. I'm looking for a good one since forever, but they are either too small, too slow or too costly. Hopefully technology developments will bring soon a good 10" before my eyes will need a 15" one:) Reading old books and magazines is also a problem: they're often 100% graphics with no OCRed text, therefore they're really slow, also zooming a page with diagrams on a technical book can be painful on low end…
No offense, but the article discusses 10" ereaders heavily (that's the screen size of both the reMarkable 2 and the Note Air). There's also the Kobo Elipsa if you'd like something that's totally focused on reading. I've been using a 7.8" Nova 3 myself for a few months now, and it's a dramatic improvement over the 6" Kindle I was using before. I love having a screen that's closer to the size of your average hardcover…
The problem with working online is that most of these devices phone home regularly, and while I wouldn't mind if they read with me an electronics magazine or book, that would be different since I'd also use a reader for displaying medical prescriptions and/or other personal documents.
Broadly speaking, device manufacturers (TVs, home appliances, etc.) became obsessed with making users sign in to their own cloud and downloading their own app; no thanks, I'd rather buy a device that lets me browse shares on the local network I'm connected to, and/or save documents into their storage using a USB cable. If the reader and the media are both within my house walls, I don't see reasons to connect outside.