Obviously, the situation has changed in recent years, so it's now considered a much higher priority by many people and some of them are actively working on it. But it's a lot of work to be done by volunteers, so it takes time.

That's the reality of open-source projects: things get done when they are important enough to motivate someone to either fund it or work on in their free time, not according to idyllic roadmaps and schedules.

They are favorable to crate-name-as-namespace (so that once you have the tokio crate you can use tokio as a namespace) and there's ongoing work on that. But as said above, it takes work to implement.

There's no desire for other meaning of the word "namespace" because famously nobody ever made a well-reasoned proposal (despite the amount of social media outrage over the lack of namespace).