The Watchtower is dishonest in re-defining the word "apostasy" to mean dissent against the Watchtower even if on solid grounds.
Their own New World Translation (reference Bible) shows clearly in several footnotes that "apostasy" is (spiritual) "unfaithfulness" (or adultery, prostitution, fornication). The Watchtower is clearly guilty of this, for lusting after the "god of religion" and ignoring the "God of Abraham" and obfuscating his message the "unabridged gospel").
(Why does the "true religion" secretly blind its followers to the "Good News" according to Paul, Moses, Isaiah and Psalms?)