> just a proposal

It’s literally final pending commitments from/to another standards body. If they hadn’t made that commitment there’d be people chastising them for something else. I swear to fuck, we can’t have nice things because no one will ever accept having nice things.

Considering that they tend to stay forever, I'd rather wait for them to be well designed than rushed and half-baked.

Almost all of it has already been implemented in Safari and Chrome, it's behind a feature flag until the spec is finalised