There’s nothing new here and there’s nothing from Mr. Johnson that can’t be easily rebutted. In fact most of this has been addressed before either here or on other forums. As a simple example, take #1. Here are the words of Archbishop Lefebvre 2 years after the consecrations:
Someone was saying to me yesterday, "But what if Rome accepted your bishops and then you were completely exempted from the other bishops' jurisdiction?" But firstly, they are a long way right now from accepting any such thing, and then, let them first make us such an offer! (Archbishop Lefebvre, Two years after the Consecrations)
And here’s Bishop Williamson’s take on this quote:
“… In other words, what if Rome offered you a sweetie-pie solution? Answer: firstly, the Romans are a long way right now from accepting any such thing, and then, let them first make us such an offer, then we’ll think about it. …” (Bishop Williamson: 6th Bristol conference on SSPX, Archbishop Lefebvre & Rome, 2’58” - 3’18”)
Now clearly if Archbishop Lefebvre had set this “pre-condition” in 1988 as Mr. Johnson alleges, he could never have entertained such an idea in 1990, yet he did and Bishop Williamson agrees that he did.
Also, concerning this so-called "pre-condition"
the conversion of modernist Rome. I would ask the conversion from what to what, how is it to be judged and by whom? What are the concrete steps you want to see executed?