It's not really specific to Amazon. Voice assistants are a novelty and mildly useful thing but I mostly use them for a few very specific and non-critical things. In something like my car where they could be very useful, they mostly can't handle the more complicated queries that would actually be valuable to do completely hands-free. If I had to give up voice assistants tomorrow, I'd pretty much shrug and move on.

Honestly, Kindles aren't that different. I like them (and my iPad) for traveling but I'm not sure ebooks have been the revolution that some thought they would be.