Why did nobody inform me that Latin was abolished?

From Aurelio Porfiri’s website:

Many years ago, in the 1990s, I assisted in a dialogue between a Deacon, and an organist who was trying to ask about the use of the Missa de Angelis setting during the Mass. The request freaked the Deacon out, and, through sweat, he answered that the Council had abolished Latin.
Having listened to this, I started to ponder about the words of the Deacon and asked myself what Council may have abolished Latin: Calcedonia? Nicaea? Trent? Lateran IV? Pistoia?
But instead I learned that it was not Pistoia the Deacon was referring to, it was Vatican II! When and where had this happened? What documents are there abolishing the Latin ‘now and forever’ (et in sæcula sæculorum), amen?

Read the full post here.