Well what were you expecting? This is like when people install GrapheneOS on Pixels, because it's still the best platform to have a Google-free device.
It's entirely possible that someone wants to buy a Kindle because of it being a great device, but not want to be tied to Amazon's data mining exercises and/or buy books from them because of their behaviour as a publishing company.
I think he's trying to point out that if someone were that concerned with trying to not be data mined by Amazon, they wouldn't have an Amazon account to be able to order a Kindle in the first place.
That said, there are more options than Kindle. The Kobo eReader recently got a big revamp, and is now in many ways better than Kindle. And it works directly with library books (at least in the US, not sure about other countries).
So if you want an eReader, shop around first before jumping to the conclusion that you need to find workarounds for Kindle.
It's perfectly reasonable to want the hardware of a Kindle, while not wanting to deal with the software shenanigans. I'm sure plenty of people on Lemmy have bought a laptop before then put a different OS onto it, for example.
Even putting that aside, did you not read the first paragraph? The author clearly states that alternatives like Boox and Kobo aren't available in their country.
You actually as if their position is unreasonable. It really isn't.
My mother in law had a nook, and that was one of the worst goddamned devices i'd ever used. Low res screen and cheap buttons, buttons that you had to use all the time because the touch controls were so awful. The interface was just extraordinarily bad.
I hate to say it, but the Kindle line are the best devices on the market for ebooks. But I'd pay a little extra if Besos got kicked in the balls with every purchase.