The thing about Mojo is that the part they spend most of their time promoting in their online material (Python but faster and good for AI) doesn't seem to require a new language at all, but rather a new hardware-aware Python compiler and some extra library modules.

It sure looks like they only turned it into a new language because they wanted to add static typing and immutable references, which maybe you care about and maybe you don't.

In that light it's hard for me to appreciate the development direction they've gone in.