I didn't realize the Gemini makes it so that saving chats in your sidebar = sharing chats with Google for AI training. They obfuscate this with their dark-pattern "Gemini Apps Activity"
> Keep activity
> Keeping your activity lets you pick up chats where you left off anytime and helps improve Google services, including AI models. When this setting is off, Google still saves chats for 72 hours to respond to you and help keep Gemini safe.
I'm surprised they even feel a need to trick you. They have access to the data and more than enough motivation.