What norms, instructions, permissions and customs are there that do not conform to Traditionis Custodes?

This bullet point in [Tradionis Custodes](https://www.vatican.va/content/francesco/en/motu_proprio/documents/20210716-motu-proprio-traditionis-custodes.html) has me super confused: > Art 8. Previous norms, instructions, permissions, and customs that do not conform to the provisions of the present Motu Proprio are abrogated. And I can't watch enough Dr. Taylor Marshal podcasts to find this out. I went to two Latin Masses this weekend for a Troops of St. George Assembly and noticed that the two different priests closed the Mass differently. Which got me thinking, if something like Pope Leo XIII's St. Michael Prayer is customarily prayed in some parishes or a few Hail Mary's or anything of the sort, are this customs canned in favor of strict adherence to the 1962 missal (except the part where the readings are in the vernacular)?