No. How is it "making your own rules" for a traditional Catholic priest to absolve someone from excommunication, but it's not "making your own rules" to reject the new Mass? If anything, it takes a higher level of authority to reject the ceremony of the Mass than to pardon someone from excommunication.
The question is, do we accept the authority of the new church or do we not? My answer is a simple "no"; epiphany doesn't seem to know the answer to that question, and neither do you.
In the traditional Rite, the priest says these words of absolution in the sacrament of penance....
"May our Lord Jesus Christ absolve you: and I, by His authority, absolve you from every bond of excommunication, (suspension), and interdict, in so far as I am able and you are needful. Next, I absolve you from your sins, in the Name of the Father, and of the Son, and of the Holy Ghost. Amen."The word "suspension" is used only for clerics. A cleric may be suspended without being excommunicated; but, should he incur excommunication, he is suspended also.
So as we see, there is no "your own rules" involved for a traditional Catholic priest to absolve someone from excommunication.
There is also no "your own rules" to reject the new "mass" because we are bound to the TLM via the law of Quo Primum till the end of time, as is every other Roman Catholic - till the end of time. Per Quo Primum, we are to assist at the True Mass
"without any scruple of conscience or fear of incurring any penalty, judgment, or censure." So what if the pope and the whole rest of the world insists we go to the NO - we cannot because we are bound to the True Mass according to the law.
As you can see, in both instances no body is making their own rules at all.