I just read the signals proposal and was not impressed. There is a lot group thought in JavaScript, in Java too but more in JavaScript, around standardizing convenience based upon knowingly bad decisions from convenience abstractions.

Managing and updating the DOM is stupid simple and that simplicity has nothing to do with state, which a fully separate yet equally simplistic concern. That is something UI frameworks most commonly fail at horribly with a mountain of highly complex state bullshit that is forced on everything. But because framework people cannot architect original applications at any level these failures become indefensible standards enshrined by the most insecure among us.