Thanks! He has his reasons, but it seems to me that this is not unlike those old Hollywood movies about real performers and composers and lyricists in which we see numbers performed in a laughably anachronistic fashion.
I sure hate giving hits to anything by Ruthie Fierberg, the writer who gave us these (and I'm guessing much else similarly obviously wrong):
"Neil Simon’s new play—the one that cast Ron as an understudy—must have been Yentl, which officially opened October 23, 1975, at the Eugene O’Neill Theatre."
"Bennett was directing and choreographing A Chorus Line, which would have been in previews (or just about) when Chicago opened on June 3, 1975."