Good. Trying to prevent harm from realistic images or voice by preventing access to technology is not realistic or good idea.
When you allow people to use them fully, people soon get used to fact that they can't trust the voice or image anymore.
When you allow people to use them fully, people soon get used to fact that they can't trust the voice or image anymore.
Additionally, if you poke around the web a bit there are many free TTS websites that produce higher quality audio than Mozilla TTS without requiring you sign up for anything.