[dingnuts]

>I can’t imagine anyone would be happy shipping their private personal thoughts to a cloud LLM + unknown backend service provider

you're in a tech bubble if you think this.

Do you think all the people on this subreddit https://www.reddit.com/r/CharacterAI/ are keeping private thoughts to themselves when doing roleplay with their virtual companions?

No.. I think most people don't think about this stuff at all.