FAA providing full service during the federal government shutdown

My flight instructor certificate was expiring this month (unlike a pilot’s license, the instructor certificate must be renewed every two years), so I rushed over to the FAA’s Boston FSDO to have an Aviation Safety Inspector bless my paperwork and issue me a temporary certificate. He said “You didn’t have to rush; we’ll all be here during any shutdown.” What about the mailing of the permanent certificate? Wasn’t there a risk of that being delayed? “It’s done by a contractor, so you should have it within a week regardless.”