I can't believe it took this long for a protest to happen. This was the real issue regarding text-to-speech as I saw it. Yet the press notably failed even to mention it at the time:
You may remember a few months ago, when The Authors Guild claimed (falsely) that the text-to-speech feature violated copyright law, and forced Amazon to disable it.
Now, the people who would have benefited most from the new feature — the blind, and others with reading disabilities — have made it clear that they're not going to stand for it.