People communicate with regards to the audience they expect.

This is why Rust (it’s a systems programming language) and LSP (the language server protocol invented by VS Code) are not explained in the article.

I am hoping I don’t have to define the words I used, but if in doubt, Google or ChatGPT are your friends.

Language Server Protocol, it's what your IDE (like VSCode or other) uses to do linting, syntax checking, and "go to reference" stuff.

A Rust https://en.wikipedia.org/wiki/Language_Server_Protocol

Why don't people use Google for such incredibly simple questions instead of asking the comment section?

LSP is a well known term among programmers these days.