Not necessarily - people close to me were complaining about what they saw as losing a part of their identity ( and grandchildren definitely were not happy about the change).

Even for those who learn to speak with an oesophagal voice, being able to real time map it to something more natural would be great.

To be more specific, they consider themselves to be 'voice mutilated', even when able to speak, so I guess that anything closer to their original voice would be a net benefit.

I suspect that it would be immensely better to sound sort of like yourself than like a standard text to speech engine, and those are used extensively