> Every post about programming languages seems to mention Rust. Even C++ articles bring up Rust, and Zig articles bring up Rust.

"Even C++" makes no sense. That's exactly where you'd expect it to be mentioned because Rust is pretty much aiming to be a C++ replacement. Mentions in the context of Zig also make sense, because Zig is aiming to be a C replacement in the same way Rust is aiming for C++, and C/C++ are overlapping areas.

You don't see much mention of Rust in discussions about something like Lua, because those are very distinct.

Some other reasons you might see it mentioned fairly often: Rust solves some issues at compile time that many languages solve at runtime using GC, making lower level programming more approachable for high level programmers and broadening its target audience. It has also had extremely active evangelists all over the place for a very long time, causing not mentioning it to trigger annoying derailment of discussions.