Nice screen shot! Darn shame I missed that broadcast. ;-)
Last I checked, that BCE designation was in use well before my grandfather was born...and he was around early enough to walk to the Yukon during the Klondike Gold Rush.
It has nothing, nada, zipppo, zilch to do with P.C.; but, like “the Communist metric system”, reality has no bearing on the unwashed, unlearned, Illiterati’s entrenched opinions based upon history beginning with their (or at best, their parents’) birth.
The CE and BCE designations are being used for no other reason than to eliminate references to Christ in our culture. These absurd designations were not in common use until relatively recently, but if someone was using them 100 years ago - and I am sure if that is the case that the examples are few and far between - the motivation was the same. And, yes, it is the Gramscians and their postmodern friends who have been pushing this among publishers.