I'm not the person you're responding to, but I feel I have a great example. Replacing the Google Assistant with Gemini has made my phone both slower and less accurate. More than once have I said "Hey Google, Play <SONG> by <ARTIST>" and had my phone will chirp back the song is available for streaming instead of just playing it. Once, I even had it claim it wasn't capable of playing music, I assume because that's true on other platforms.

The most spectacular failure was when I asked it to make a logo for a project. The project has "cogs" in the title but that refers to Cost of Goods Sold not the physical object, so I specified that it should not include a cog a in the logo. Of course, it included a cog in the logo.

I asked it to help me create a business plan. Partway through it switched to Indonesian language, for no reason I could see. Then, after about two hours work on the plan, with about 200K tokens in the context, it stopped outputting anything reasonable.

I have tried to get it to help with Google Sheets formulae about a dozen times so far. Not once has it actually got anything right. Not once.

It's serviceable as a chatbot, but completely useless if you try to get it to actually do anything.