It’s a credit to the work of decades’ worth of journalists, producers, factcheckers, reporters, hosts, writers, and, admittedly, just a touch of handy self-mythologizing, that CBS News’ 60 Minutes is only rarely viewed through the lens of being a ratings juggernaut. It is one, though, in case that wasn’t clear: One of the most-watched shows in network primetime, for a longer run than literally any other series you might care to name. But the new…