Will accessibility tools that rely on automating input to the browser cause it to become untrusted? Will it affect extensions? The spec does currently specify a carveout for browser modifications and extensions, but those can make automating interactions with a website trivial. So, either the spec is useless or restrictions will eventually be applied there too.
The Firefox team responded saying that it’s an awful idea and that plenty of people rely on being able to appear human, for example screen readers who need to interact as a human would but then translates it into a format their users can understand.
These propositions are just full of drawbacks for the user, the user actually gains nothing at all. Let’s hope this rubbish doesn’t take a foothold.
The biggest issue I see is not being able to block malicious scripts from running. An all or nothing approach is a terrible terrible idea.