I didn’t say the protestants are schismatic , though techincally under the Church’s definition they could be considered materially schismatic, rather though the correct (non politically correct term) would be infidels or some synonym of that.
They would be material heretics, not infidels. Infidels are those that do not acknowledge Jesus Christ as Lord even if they believe in the one tru God (other than Jews who are classified as “Jews.”). Here are some good definitions from the Catechism of St. Pius X:
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Q. Who are infidels?
A. Infidels are those who have not been baptised and do not believe in Jesus Christ, because they either believe in and worship false gods as idolaters do, or though admitting one true God, they do not believe in the Messiah, neither as already come in the Person of Jesus Christ, nor as to come; for instance, Mohammedans and the like.
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Q. Who are the Jews?
A. The Jews are those who profess the Law of Moses; have not received baptism; and do not believe in Jesus Christ.
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Q. Who are heretics?
A. Heretics are those of the baptised who obstinately refuse to believe some truth revealed by God and taught as an article of faith by the Catholic Church; for example, the Arians, the Nestorians and the various sects of Protestants.
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Q. Who are apostates?
A. Apostates are those who abjure, or by some external act, deny the Catholic faith which they previously professed.
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Q. Who are schismatics?
A. Schismatics are those Christians who, while not explicitly denying any dogma, yet voluntarily separate themselves from the Church of Jesus Christ, that is, from their lawful pastors.