If machines were amazing at Speech-to-Text, okay, sure. But while the capabilities are impressive, they still kinda suck at it.
I don't see how text to code would be faster than typing. And even if it is, typing speed is not really a limiting factor in the speed at which I can produce code.
But yeah, that is pretty close to amazing.
I kinda forgot about it after seeing that the Rhasspy community experimented with it, and it had issues with short utterances and a slow startup time.
Yet, it hasn't stuck. I'm exclusively using Siri to set timers. Most people are like me, or don't use it at all. Some use assistants for googling factoids or something. Fidelity wise, it's really underwhelming.
It's not a social acceptance issue, because people would still use it at home, and they don't. It's a small chance there's some key UI insight missing (discoverability for one), but I doubt it. Even with perfect UI, natural language is quite flawed when you're dealing with technical details (see exhibit on variable naming).
Anyway, the chances of Github solving this in an exceptionally difficult subdomain, as a side project, seems like a... Let's say, long shot.
That said, the silver lining in all these billions spent on voice interfaces is accessibility. For some people, these things are a life saver.
This means it's an assistive technology, but hardly "a generational paradigm change in how to write code".