It's a specialized classifier for actions on a form. So.. not totally. If you are building a bot system, which can fill form quickly without having to reason too much about the form, this probably can help.
Ease of backup too. One of the issues I take with browsers allowing web apps to save data locally is that they don’t also expose a way to easily locate the data in the filesystem or export it, and to my knowledge on-disk format isn’t standardized and so portability between browsers is also a concern.
The effect of this is that unless the user uses migration assistants or similar when upgrading to a new computer is that they’ll lose all local web app data. To me to this feels like a serious problem but when it’s brought up it tends to be hand waved away.