This exists, the standard is called C2PA, Google added support for it in the Pixel 10. I was surprised and disappointed that Apple didn’t add support for it in the most recent iPhone! A few physical cameras are starting to support it too (https://yawnbox.eu/blog/c2pa-camera/)
Gemini 3.0 isn't broadly available inside Google. There's are "Gemini for Google" fine-tuned versions of 2.5 Pro and 2.5 Flash, but there's been no broad availability of any 3.0 models yet.
Source: I work at Google (on payments, not any AI teams). Opinions mine not Google's.
ChatGPT and Claude are mistaken if they think it is incorrect. The parallelism in verb tenses is between "continuing to deliver" and "improving the efficiency". It's a bit wordy, but definitely not wrong.