The law is that because the OP are an exempt religious order, only the major superior can authorize its use. However, there is another glitch. The major superior can only authorize its use if the friars vote for it. Then the major superior can implement the vote.
Thus far, the exempt communities are being very cautious in their judgment. They are allowing some religious and some houses to use one of the old rites in public, but they don’t want to make it a universal thing, because it will divide their community. The primary duty of every major superior is the longevity of his order. He can’t do something that will cause the house to collapse.
Unless there is a majority vote, the permissions are going to be temporary and very specific. All of us, Traditionalists or mainstream Catholics have to support this. We don’t want to bring the EF or the older rites back at the expense of causing division among men who are brothers to each other. That’s not a good means to a good end. We must place the good of the religious order over our personal preferences.
Fraternally,
Br. JR, OSF