The goal of Wasm GC is to allow GC-using languages to be ported to wasm. They already can today, of course, but this will make them more efficient in some cases

The goal of Wasm GC is to allow GC-using languages to be ported to wasm. They already can today, of course, but this will make them more efficient in some cases, with smaller downloads and faster execution. This might be a very big deal - most code written today is written in GC languages! - and that is separate from the story for C/C++/Rust/Zig and other linear-memory languages. Concretely, the wasm community already has GC ports in progress for Java, Dart, and Kotlin, and there is a lot of promise shown there.