If anyone at Google cares, I’d pay for Gemini Pro (not this new $200+ ridiculousness) if they didn’t train on my chats in that case. I actually would like to subscribe..

There's already an option for that. The downside is you can't access your chat history.

And lots of other features don't work, particularly external integrations. Gemini on Android refuses to do basic things like set a timer unless chat history is enabled. It is the one key feature I really want to pay extra to get, and that preference goes x2 when the AI provider is Google.