What I understand is that the “powers that be” allow these “people” to claim that they are Catholic (as long as they keep donating)...they don’t come out and openly and LOUDLY declare them excommunicated.
If your own bishop and the prefect for the Apostolic Signatura tell you not to come to communion - you are being told you are ex-communicated.
You have to understand the Sacramental Life and Holy Eucharist to understand what these men saying these things are saying to the parishioner.