The Tridentine Mass came into use around 1570. What’s with “the ancient rite” terminology this article constantly uses? There are many liturgies far older than the Tridentine Mass. It makes it sound like the Pope is weighing on using a Mass from 400s.
Nonsense. What we know as the Traditional Latin Mass was in use in the West since the time of Pope St. Gregory the Great (590-604) in its essential form. It was codified at the Council of Trent and thus it came to be known as the Tridentine Mass.