Ask HN: How to prevent LLMs from building a profile of us?

Perhaps similar to what Google (implicitly) does with search, but I assume LLMs would learn more deeply about us, our thoughts, questions, .. . What I'm thinking of is to, for example, circumvent it by use a second LLM to rephrase our prompt, generalize it, narrow it down, etc. Is it even possible?

Edit: Quotations-> Questions . Though it would learn our writing style too.