Well it certainly looks pretty bleak. Corruption is nothing new to the Church, however. The Church has endured through rough times before, although this is a bit worse than the previous ones. I'm not sure I know what you mean by this:
"...the remaining Catholic clerics in Rome should immediately grant celebrants to all loyal diocesan and validly ordained independent priests."
What do you mean by "celebrants?"
The SSPX has been negotiating (sort of) with Rome for a long time, and Rome keeps trying to bypass the issue of dogma. Bishop Fellay, on the other hand, has attempted to keep dogma in the foreground, since his mentor taught him that unless they do so, there can never be any good to come from any agreements. Now we can see the proof of that in Campos, Brazil.
If you are referring to "indult" I would like to remind you that no need for any indult exists for a priest to say the Traditional Latin Mass. The "indult" should be required for a priest to offer the Novus Ordo! All priests have a right to say the Mass of Ages because Quo Primum grants this right "in perpetuity" and no pastor, not even a pope (a pope is a pastor) can ever take that away. There have been men murdered for saying this.
Once ordained, a Roman Catholic priest can say Mass wherever he wants to, evidenced by the priests in the catacombs, on the battlefields, in the prisons. Now even the local parish is a cave, a war zone, a prison. But getting the Pope and bishops to admit as much is the same problem as getting them to release the 3rd Secret, or to consecrate Russia properly. They won't do it because to do so would contradict everything they have so proudly asserted over the years. They have lied, and they don't want to be found out. What a wicked web their deception has woven.
There is a priest in CA who received something from Rome called a celebrant (I was told). If I understand correctly, it grants a priest faculties similar to that of incardination in a diocese. The celebrant allows the priest to bypass the diocesan bishop all together. He can operate anywhere in the world and need not inform the local bishop of his presence.
I should add this celebrant made the local bishop furious but there isn't a thing he can do about it. This priest has a traditional chapel.
I believe she means "celebret".