The hash is keyed and rotates once a day, so it's not a long-term history. And in any case, nobody's trying to build a unique tracker out of it on the other en

The hash is keyed and rotates once a day, so it's not a long-term history. And in any case, nobody's trying to build a unique tracker out of it on the other end, which is the main thing (even in our internal analytics, we even throw away the PII we get directly from request attributes after 90 days).