> I've been playing with SEO for this website, and I learned that Google prefers human content because (they are not gonna say it) it needs to train, it cannot train on what it has already trained on. Google's crawler is hungry for human content

This is the reason why you can hardly trust AI companies to not train on your code. If you care about privacy, I think it's best to use Antrophic models via a third-party provider like GitHub Copilot (business) or Amazon Bedrock.