Many NewCalendarists claim that an abrogation of the Typicon is not a sin, and especially not a serious one, because it is does not constitute a deviation from, or denial of, the dogmas of the Faith.
NewCalendarists refuse to acknowledge the indisputable fact that it is no more possible to divorce dogmatics from liturgics, without destroying the Faith, than it is to rip a man's soul from his body without killing him.
Thus, for example, the NewCalendarists should not celebrate the Nativity of Christ on December 25, but on December 23, a two-day "correction" in the opposite direction, since December 25 according to the Old Calendar, during the period of the first century b.c.
The new calendar, together with the new Paschalion, was specifically condemned by Great Pan-Orthodox Councils in 1583, 1587, 1593 and 1756 and, according to the decisions of this Councils, all those who accept these novelties are anathematized and separated from the Church.
If anybody tries to claim that this was not the case of preaching heresy condemned by Councils, we answer - if this was not a legitimate cause, none of the True Orthodox in XX century have had the legitimate cause to depart from their heretic/schismatic hierarchy.
This was another eloquent statement of the brave Metropolitan, about the grace issue - the new calendar Mother Church is a treasury and a spring of grace, while the bishops who faithfully adhere to the Tradition of the Fathers are graceless heretics.