Only tangentially releated but I thought the EU required that you can delete selective data. Example: Being able to delete a single email vs having to delete all emails.

And yet, Gemini does not seem to let me delete queries. This is unusual for Google who provides ways to delete pretty much all data on selective basis. Maybe I just can't find the option. Or maybe this option only exists if I'm in the EU

The gist of the GDPR in that respect is it allows someone to request a record of what data a particular business has gathered about them as well as request deletion of that data. It also introduced a lot of restrictions around what can be done with a particular subject's data, like sharing with third parties.