This question should be qualified as "How big is apostasy to the Governing Body?"
In their minds, the Bible is for them, to them, and about them. They are God's mouthpiece and Jesus' roadies whom we have to get through to hang with the band backstage. I mean, come on, they listed JW conventions as fulfillment of the trumpet blasts of Revelation. These guys believe everything in the world revolves around them.
Some country levies a tax on them and it's fulfillment of a prophesy about persecution. But if they win a court case, it's God protecting his organization. They are convinced no matter what happens to JWs, it's earth-shattering and it "means something". Meanwhile, a large portion of the planet has never heard of Jehovah's Witnesses. The rest just see them (ugh, us - now I need to go gargle with something) as an annoying cult who wake people up on Saturday to give them magazines to throw away.
Of course, the Society tries to make apostasy seem like a major plague on the earth. Why not? They've taken a passing remark by Jesus - faithful and discreet slave - and made a whole religion around it. Their messiah complex, narcissism, and total indulgence in their own fantasy world cause them to believe some universal spotlight is on them and every person and angel are holding their collective breaths waiting to see what will happen next in the unfolding saga of Jehovah's Witnesses.
Every newspaper headline, they direct back on themselves. Every natural disaster, every crime statistic, every time a church pastor (except for their own) is caught molesting a child - everything - is perceived as "This is what we've been prophesying about." Since they don the name of "Jehovah", they feel that the Creator is now bound to them and forced to take responsibility for them. I guess if they can write about what time for Armageddon would be "appropriate", that's not shocking.