I'm sure my accidental clicks count for some of that. In the results page, they put an "AI Mode" button where the "All" button was, and the font doesn't have serifs on the 'I', so any time I return back from an image or video search, I end up on their Gemini page, because I don't notice the subtle change until I've already clicked on it.

Clearly they meant for people to click on it on accident, because it puts "All" in the second tab, and it otherwise doesn't make any sense to have the default tab be the second one.

The only time I use the Gemini response on purpose is when Cloudflare tells me I'm a bot and won't let me visit a web page, so I ask Gemini to scrape the relevant information for me, because bots are quickly becoming the only thing that can make it paste a Captcha. Sometimes that requires using the 'Show more' button, and it's not clear if that counts, too.

Also, I've heard they've begun rolling out replacing the Android voice assistant with Gemini, so a bunch of people are using it without trying to, even when they'd prefer the voice assistant. From what I've heard, the most common uses for voice assistants are setting reminders and controlling media players, and Gemini is much worse at that than the old Android voice assistant.