Wasmtime is actively maintained, and owned by the Bytecode Alliance. I’m not sure what project you are thinking of but it’s not Wasmtime. (Disclosure: I am a Wasmtime maintainer)

Not wasmtime, but I'm reminded of wasm-pack [0], though it's not project ownership but crate ownership, and not really a big kerfuffle.

[0] https://github.com/rustwasm/wasm-pack/issues/928