You could still type.
Yes, that's a terrible place to develop cancer. What's really worse than someone using a voice box machine is watching someone smoking trough their tracheotomy tube in their neck.That's a sobering sight about the addictiveness of smoking.
As well and perhaps more a testament to humanity's proclivity for self-destruction (denial). The hardest thing for any person to admit is that they are in error.
Good luck.