We probably read very little about Java and yet it runs the world. What we like to read and write about may not be very well correlated with reality. Rust is

We probably read very little about Java and yet it runs the world. What we like to read and write about may not be very well correlated with reality. Rust is a very niche language, gaining attention, and a serious contender to be an important language but it's probably not going to take over any space and even if it does, it's going to take a long while. You definitely don't need to learn Rust. It's a neat language though and it's worth tooling around in for a bit, at very least to get a feel for the 'borrow checker'.