I dont understand who this is for honestly. Unless you dont have hands, why would you want to talk to your computer. Maybe Im just autistic, but I would always prefer text over speaking out and have that translate to text.
Greg Priest Dorman [0][1] had other physical issues such that he had to regularly switch between sitting, standing, and walking during his workday. His solutions included (in part) some very specialized keypads, but TTS might well have been another solution for someone with similar needs.
Another fellow on my team refuses to write/type anything other than pure code to solve issues at work, but will absolutely talk for hours on end about designs, considerations, issues, what-have-you, so we're actively trying to get him to adopt a TTS-based workflow for knowledge transfer, writing tickets/bugs, etc.
[0]: https://computerhistory.org/profile/greg-priest-dorman/ [1]: https://www.cs.vassar.edu/people/priestdo/wearables/top