The Church has had different Missals through it’s history, and if you add in the Eastern Catholic Churches, you have proof positive that the Church is not bound doctrinally to a particular missal, but only as a matter of discipline.
Anyone who believed that the Missal could never change was improperly Catechized.
The Church is bound doctrinally to a male only priesthood.
Anyone who believes that can change is improperly Catechized and probably heretical.
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