You could also do this easily on that $60 laptop or any chromebook just by running an editor full-screen in kiosk mode. For some reason, this obvious answer is not preferred by anyone pursuing this bizarre line of thought.
Compare with amateur photographers who spend most of their time obsessing over gear on forums instead of just taking pictures.
What about people who don't care about tack-sharp images? 10+ years ago, I probably would have said they should buy a nice point-and-shoot with a versatile zoom rather than lugging a cheapo DSLR and zoom lens around. Today, I'd say they should just take pictures with their phone. In 2022, I think the segment of people who don't really care that much about image quality but still have a good reason to carry around a dedicated picture-taking device is small and rapidly shrinking.
If it's about aesthetics—if you want to light candles and put on an old jazz recording and feel like you're a postwar novelist living in Paris—that's totally fine too, you can pick up a real typewriter for under $100.
E-Ink is amazing for ebooks, but I'm not sure what the appeal of this low-tech/high-tech thing is, especially given the price.
>You could also do this easily on that $60 laptop or any chromebook
You couldn't because these devices don't have an e-ink screen. This would be the entire point of having a kindle as a writing device. Otherwise you would be correct