Since when do Anglicans celebrate Mass? Surely it's a dubious phrase to use, in the light of part of Article XXXI?

"Wherefore the sacrifices of Masses, in the which it was commonly said, that the Priest did offer Christ for the quick and the dead, to have remission of pain or guilt, were blasphemous fables, and dangerous deceits."

If it is actually a Mass, rather than a standard service with Eucharist badly labelled by Anglo-Catholics, then I'd find that far more controversial than KJS presiding.