Relying to a post in another thread to try to keep things sort of organized …
Not exactly. There are no speakers on the device itself, so you definitely can’t get sound coming out of it without connecting it to bluetooth headphones or speakers.
You CAN buy the same book in both Audible (audio) and Kindle (text), and yes, you have to buy it twice, although the Audible version will usually be discounted if you already own the Kindle version. (Probably still cheaper than buying the paper version in Taiwan.) And then you can download the Audible version to the Kindle device, and then you can have it read to you if you’re listening on a connected Bluetooth device.
I’m playing with this on my iPhone right now for a book where I own both the Kindle and Audible version … it’s kind of cool. It’s highlighting the phrases on the page as it goes through, and playing them on the bluetooth speaker (obviously the phone by itself could also play the audio, but my Kindle Paperwhite cannot). And I can adjust playback speed. But again, that’s after having bought both a text and audio version of the book.
I’m guessing there are ways for the vision-impaired to also have books narrated with a less-good computer voice, presumably without needing to buy a different edition of the book. However, I’ve never looked into those. Judging from pages like the one linked below, there do seem to be some options for narration.