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However, my concern is how blind people are able to get used to Bitcoin? To my knowledge, wallets (either with a GUI or CLI) don't have "text-to-speech" features to make blind people's lives easier. It'd be great if developers keep blind people in mind to help increase the adoption of the pioneer cryptocurrency in the mainstream world. The only thing I've found is an audiobook of the Bitcoin whitepaper which is a great solution to introduce blind people into the "mechanics" of Bitcoin.
Any thoughts?

You've raised a good concern there, op. It would be pretty challenging for the developers though. But we're now in the modern era so there will surely be someone who can think of a solution to that concern. Braille system can be used for them. I've read an article[1] that btc's white paper is written in Braille for blind people. The same article includes an interview of a blind bitcoin user who said that he doesn't believe that "developers think about disabled bitcoin users." Maybe it's time for that to change and consider our visually impaired fellas in the development of bitcoin."
[1]https://news.bitcoin.com/bitcoin-accessibility-from-a-blind-persons-perspective/