1. If you don't think I am correct in my assumption then why not say why?
Excommunication affects the soul more than it does the body. It has no effect upon our life in this world unless it causes us anxiety concerning our salvation. If one doesn't believe it does then it is of no consequence at all.
2. PXII to me says Pius XII, in the same way as JPII and BXVI say Pope St John Paul II and Emeritus Pope Benedict XVI, surely you must have seen people refer to popes by their initial and number?
Under Pius XII several theologians were under investigation by the Holy Office for their modernist views but as far as I am aware none of them were excommunicated. In fact most of them appeared at Vatican II as periti.
Now that you mention "Confraternity" I imagine you mean the FSSPX. However, I still don't get what is your message behind 'why it reminds you' of those excommunications particularly and not others, e.g. Huss's, Luther's, Elizabeth I, etc.