“Chrome is reaching into the user’s filesystem on its own initiative and laying down a 4 GB ML binary while the foreground tab does something completely unrelated.”
Google decided your disk was their disk and shoved 4 GB of Gemini Nano weights onto it without asking. Delete the file and Chrome just downloads it again. This is the same company that lectures the rest of the industry about user trust while quietly burning your bandwidth, your storage, and somewhere between 6,000 and 60,000 tonnes of CO2 to preload features you never asked for.