[saagarjha]

I'm not blind, but I've tested some of my apps for VoiceOver and it's just utterly unusable with a "reasonable" speed. You have to pretty much set it to your reading speed for it to be useful, and that happens to be significantly faster than most people are comfortable speaking.

[liability]

Start slow, and build up your tolerance to it overtime. If you try to jump into the deep end, you'll just make yourself disappointed.

[saagarjha]

I'm reasonably good at listening to sped-up audio, personally, so this wasn't really an issue for me. I was just providing anecdotal reasoning of why TTS users may set their audio speed to something that might sound unreasonable: it takes forever to navigate the interface otherwise.