More difficult to remove than install. Adding the file took zero clicks. Removing it requires (a) discovering the file exists, (b) understanding what it is, © navigating into a hidden user profile path, (d) deleting it (and on Windows, also clearing the read-only attribute first), and (e) accepting that Chrome will silently re-download it on next eligible window unless the user also navigates chrome://flags, enterprise policy, or platform-specific configuration tooling to disable the underlying Chrome AI feature [5]. None of those steps is documented in the place a normal user looks - none of them is even hinted at in default Chrome.

This is 5: https://pureinfotech.com/stop-chrome-gemini-nano-download-windows-11/

Obviously only windows focused, so how other platforms stop would require more searching.