Are you aware of a policy that allows Strava when within sight of shore, but bans it when under more sensitive operation?

Or is this article perhaps better interpreted as an example of a dangerous behavior that could be happening also during those sensitive times (in which case, it is unlikely that French media would be even running a story with a map of the sensitive location)?

If you can guess what shape the runner was going in, you could infer a lot of information from that squiggly line in the picture. You could determine the ship's course and speed.