First impressions and observations:
1) I did not know Fr. Calderon was as old as he is (born in 1937, he is 83-84 years-old today);
2) The whole book is a frontal attack upon the orthodoxy of the Second Vatican Council itself;
3) It is written in a style reminiscent of Romano Amerio (entertaining despite the heavy content; the reader does not feel he is slogging his way through, and is somewhat surprsed and motivated to continue by that realization, which also brings a certain joy that he is up to the task);
4) Another similarity to Iota Unum: You don't want to put it down. It tastes good, and you have the impression of excitement to see what gets covered/destroyed next.
5) The timing: Coming out just as the MP Traditionis Custodes is released. Did the SSPX have a premonition or inside info. regarding what was in Francis's MP, and realize, "What the hell, if its all over, we might as well start blasting again?"
6) A sample of the tenor of the book: After recalling Prometheus was punished by Zeus for stealing fire and giving it to man, but also for sacrificing a bull, and giving the better part of it to men, he writes, "The Council is Prometheus in the act of his larceny. It was a maneuver of human prudence carried out by a divinely constituted hierarchy, which burned for men the incence that belongs to God. As in the parable of the unfaithful steward, the COuncil cancelled man's debt to God, promising salvation to all; and in the worship of its new Mass, it has given man the better part."" (Foreword, p.7).
7) If releasing Fr. Paul Robinson's book was a signal to Rome, indicating that the SSPX was prepared to jump on board with modernity, then what message does the release of this book convey? Will we know more after the SSPX's forthcoming commentary on the Motu Proprio? Probably.
8) I now know where +Vigano received the idea of questioning the "officialness" of V2: It is right here in Ch. 1.