We likewise declare and ordain that no one whosoever is forced or coerced to alter this Missal,
Stubborn, this prohibition doesn't apply to Paul 6's missal because he wasn't forced to issue his missal, he did so of his own accord. Your issue of calling Paul 6's missal a "revision" vs "new" doesn't matter either. QP does not prohibit the issuance of a new missal.
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In a legal sense, a law is new if it is written in the way to make it clear that it has no LEGAL connection with the previous law. Practically speaking, even if the "new" law is 90% the same as the old law, it's still not a revision because of the form of the new law. This is getting into legal technicalities, but that's the argument I'm making - that the Modernists are masters of technicalities, so they created their "new" missal in such a way as to LEGALLY be new.
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The other aspect is, Paul 6's missal is not a revision because it did not replace John XXIII's missal. Another important legal fact.