It complains about the cache expiration time being too short. But there are good reasons they can't cache it longer. The short cache has no significant effect o

It complains about the cache expiration time being too short. But there are good reasons they can't cache it longer. The short cache has no significant effect on page performance, as long as it is loaded async, but there is no way the performance tool can determine that unless it white listed it which would not be fair to someone else's tracking script.