Shouldn't text-to-speech fall under an accessibility feature? Computers have had the ability to do text to speech for decades. The quality of the computer voice

Shouldn't text-to-speech fall under an accessibility feature? Computers have had the ability to do text to speech for decades. The quality of the computer voice should not be an issue unless the voice is designed to mimic a specific human voice. The argument that voices are no longer robotic falls short, as there is no, "this sucks" legal requirement for accessibility features. I believe I have made a similar argument about hearing aids here. If a hearing aid alters/filters sound and "rebroadcasts" it so that the person can hear you'd have to be spawn of the devil to argue that this constitutes copyright infringement.