This may be out of date but in this video by Lawful Masses lawyers are concerned that software AI tools which somehow (I don't recall) help them understand a case. This issue is the AI should not use information sourced from another client's confidential case/documents to inform them about another case but they don't know how it works. Responses from Microsoft were not forthcoming.
I would argue they can't know unless they have access to the source code to verify what any (local) AI can do (not personally do it, but a trusted 3rd party audit which isn't behind closed doors).
I think it would be best if that's a user setting, like dark mode. It would obviously be a popular setting to adjust. If they don't do that, there will doubtless be grease monkey and other scripts to hide it.