Waiting doesn't work when Apple do things like ship a working and spec-compliant WebAssembly API which works great so you start using it, then they completely b

Waiting doesn't work when Apple do things like ship a working and spec-compliant WebAssembly API which works great so you start using it, then they completely break it in a subsequent update, and leave it both enabled and broken for months. No amount of foresight or caution will save you in that case. It's ultimately the browser maker's responsibility to make sure APIs work.