Wow ... that's going to extremes. But we all saw this coming and need to continue the pursuit through fasting and prayer for our bishops. God's will be done.
Does the Archbishop’s decree apply to the Mass of Paul VI as well? As far as I know, there is no universal prohibition against celebrating it in Latin.
It looks like some interested priests (at least, the diocesan ones) who were ordained after Vatican II might find themselves facing a Catch-22. They may request time and money from their respective dioceses for Latin classes in order to pass this test, and then have their requests refused.
Prior to Vatican II, lack of knowledge of Latin was not even an issue for seminarians and priests.