Voice certainly seems like a viable solution to some of that. In some ways it’s imminent if the accessibility improvements pushed to iOS, iPadOS and macOS are advanced just a bit further.

However, we should also expect to see PC use pushed into more advanced and specialized territory on our most powerful and versatile devices as phones and tablets assume more traditional PC work. That specialized use will advance as fast as the most attuned interface for that platform (keyboard+mouse) and the others will necessarily lag behind.

All of this won't solve the mobile/desktop dichotomy.

I rename things dozens of times a day. Saying "rename function A to B" dozens of times a day is unviable on desktop and is nearly unusable on the phone. And this is a fundamentally different UI.