I'm more terrified about how much (personal) data people are feeding commercial LLMs. You send Claude your Garmin data and Anthropic will keep it for literally years. And then probably hand it over to law enforcement as soon as a subpoena hits.
I've been using a local LLM (Gemma) to tag my personal documents (invoices, receipts, etc.) and there's no way I'd ever send that data to Anthropic or OpenAI.