WASM's current GC model is mostly about sharing large byte buffers. It's on about the order of OS-level memory page management. Mostly it is getting used to share memory surfaces to JSON serialization/deserialization without copying that memory across the WASM to JS boundary anymore.
It will be a while before WASM GC will look close to any language's GC.
It will be a while before WASM GC will look close to any language's GC.