The various heresies that we see and have seen, are the weeds that died quickly even though they seemed so strong at one point in time -- Arianism, Manichaenism, Gnosticism, etc. etc.
Just in the same way we see both the heresies that have sprung up in the past 100-150 years (Mormonism, Adventism, Jehovah's Witnesses, Christian Scientists) as dying out, and even the other, incomplete messages of faith are dying out as they are not strong enough to stand up to the light
Now that the crop is ripe who are weeds is quite evident as one scandal after another come to fruition. -- yes, this is visible in the various groups outside the Apostolic Church -- they are roiled with one scandal of their dogma after another
The Apostolic Church itself may have faulty men in laity and clergy, but the dogma is scandal-free as it is the dogma of the Christ Himself.
THAT is the big difference between the One Holy Apostolic Church (Catholic, Orthodox, Oriental) and both the incomplete groups and the heresies -- the incompletes and the heresies die out rapidly due to scandals of men, while for the Church that Christ founded, it has remained through 2000 years INSPITE of faulty men.
So are you saying that apostacy is not occurring in abundance today? Is there revival going on instead?