The SSPX on the other hand defends the traditional catechisms and therefore the traditional Latin Mass, and so attacks
the Novus Ordo Missae, Vatican II and the “new” Catechism, all of which more or less undermine our unchangeable Catholic faith.
Conservatives defend the
Catechism of the Catholic Church for its re-affirmation of
teachings silenced or denied by out rightly modernist catechisms; the
Society rejects it though because it is an attempt to formalize and propagate the teachings of Vatican II. Pope John Paul
II agrees with this:
The Catechism was also
indispensable (i.e., as well as the 1983 Code of Canon Law),
in order that all the richness of the teaching of the Church following the
Second Vatican Council could be preserved in a new synthesis and be given a
new direction. (Pope John Paul II, Crossing the Threshold of Hope,
London, Jonathen Cape, 1994, p. 164)
One need but consider the 806 citations from Vatican II, a number which amounts on average to one citation every three-and-a-half paragraphs
throughout the 2,865 paragraphs of the Catechism.
In particular, the novelties of Vatican II appear in the following paragraphs:
an infatuation with the dignity of man (§§225; 369; 1700; 1929...),
such that we may hope for the salvation of all the baptized (§§1682ff),
even non-Catholics (§818),
or those who commit suicide (§2283),
and of all the unbaptised, whether adults (§847),
or infants (§1261);
which is the basis of all rights (§§1738; 1930; 1935) including that of religious liberty (§§2106ff),
and the motive of all morality (§1706; 1881; 2354; 2402; 2407, etc.),
a commitment to ecumenism (§820f; 1399; 1401) because all religions are instruments of salvation (§§819; 838-843; 2104),
over-emphasis on the priesthood of the faithful (§§873; 1547; 1140ff, etc.).
Now, just as he who denies but one article of Faith loses the Faith [principle
7], so a teacher who errs on one point alone proves himself
fallible, and, renders all he teaches questionable.
Just as the Second Vatican Council is not an authority to quote even where it propounds Catholic teaching (it does not do so infallibly and
clearly), so this Catechism is not an authority of Catholic belief because of the modern deviations which it encompasses.
Those who defend this Catechism are supporting the innovations of Vatican II.