Google's AI offering came along to paid accounts without permission or request. What made it worse is that it couldn't be turned off, which… I don't even have words. It was via Jan on Mastodon that I'd seen it wasn't possible to disable. But Jan having more persistance than me actually managed to find a (hidden) solution (short version, keep asking support). Bless his magnificence for getting this. I'm now Gemini-free, particularly in Gmail which was the place it was annoying me the most.
Source: writing.jan.io