I've got a diamond I've got a pineapple

From there, go Settings > Gemini > Digital Assistants > Switch to Google Assistant. This disables Gemini, google's AI assistant, and switches you back to the old one. We aren't done yet.

Go back to Settings. From there, we go Settings > Google Assistant > scroll to find General > Google Assitant on/off > turn it off

They really tried their best to make it a pain, but you can eventually disable it. Holding the power button on your phone still pulls up a menu and asks you to turn it back on, but this is the least intrusive you can make it.

Applies to all non-apple phones afaik. For sure Samsungs and Pixels but idrk about others

1) i am from bumfuckville south pennsylbumfuckia, you of course know this great city