By that same logic, if somebody tells me they will pick me up on the way to a movie, I should go there on my own because they aren’t here already. I should walk to the movies, because my car is not currently running and whether or not it starts is in the future.

There’s such a thing as trust. Tools, people, and groups that have shown themselves to be trustworthy may continue to be trusted. It is also reasonable to point out these shifts, so that others know when announcements should no longer be trusted.