Does AI see my training data?

No, and that is deliberate. Every piece of dashboard prose, including race debriefs, comes from a deterministic template engine with a built-in check that blocks any number that the analytics did not calculate. No Strava-derived data is sent to a language model while the dashboard is running.

Do I need a power meter to use My Running Dashboard?

No. Pace and elevation from any GPS watch, plus heart rate if you record it, get you the full fitness model. A Stryd pod adds extra views on top, but it is never required.