"We likewise declare and ordain that no one whosoever is forced or coerced to alter this Missal, and that this present docuмent cannot be revoked or modified....Wherefore, in order that the Missal be preserved incorrupt throughout the whole world and kept free of flaws and errors, the penalty for nonobservance for printers, whether mediately or immediately subject to Our dominion, and that of the Holy Roman Church...."
I believe this passage is why the Modernists chose to call Paul 6's missal the "new order". They did not want it to be confused with a revision of the True Mass. In my opinion, God would not allow this level of confusion/deceit, so the Modernists had to be content with the legal definition of "new". They knew they could not abrogate/delete the True Mass; the only way to get rid of it is to create a false liturgy that people would "prefer" and so get rid of the True Mass indirectly.
It's like everything else NO Pax, they call the missal "New" when what they actually did was revise the Roman Missal, then passed that missal off as being "New", it's the same trick they use for most (not all) things NO - just like they call their religion "Catholic" when it is certainly not, and so on.
No, the law prohibits everything they did, which means that what they did was illegal right from the very first word they removed from the Roman Missal for the purpose of eliminating the True Mass.