Can you expand on that? I've only been using wasm for web (and the current status quo of JS bindings to the DOM is working just fine for me) so I haven't been following that strongly, but for the last couple months I was under impression that people are still trying to push WASI.
I'd say that wasip1 has been successful, but not any future version. You can check which version is the most popular just by looking at the Rust WASI crate versions and how much downloads each one has:
wasip1:
https://crates.io/crates/wasi/0.11.1+wasi-snapshot-preview1
https://crates.io/crates/wasi/0.10.2+wasi-snapshot-preview1
https://crates.io/crates/wasi/0.10.0+wasi-snapshot-preview1
https://crates.io/crates/wasi/0.9.0+wasi-snapshot-preview1
https://crates.io/crates/wasi/0.14.7+wasi-0.2.4
https://crates.io/crates/wasi/0.13.3+wasi-0.2.2
https://crates.io/crates/wasi/0.12.1+wasi-0.2.0