A programmer sitting in front of a text-based IDE with millions of keyboard shortcuts at their disposal has to be the least necessary use case for a voice assistant I've ever heard of.
Unless, of course, that programmer has any number of mobility issues that limit their use of the keyboard, in which case something like cursorless might be the only option.
I urge you to take a look at it. Some even claim that it's more productive than the keyboard. I don't know how the VSCode voice feature works, but if it makes integration of cursorless easier or better, then I'm all for it.