For decades, critics have pointed out the unfairness of God slaughtering billions in a future Armageddon who never even met a JW much less heard their life-saving message. (Remember the contortions around the collective responsibility of nations?) Also, why do babies and children have to die simply because their parents rejected the Witnesses?
So now we have a new doctrine which says that folks can change their minds at the very last minute and still be saved. It won't matter if you rejected the 'Kingdom Message' previously or even if you'd never heard it - God can judge your heart and you can still be saved. Awww. Whilst senior JW's may resent this doctrinal update it's presented as a more reasonable interpretation by the Org' who, with faux modesty, can claim "we just don't know".
The problem is, we DO know.
God has already killed folks who'd never heard of him including babies and children (I've posted plenty on this and won't rehash it all again here). So when your JW relative tells you how this new light is a more loving provision from Jehovah just remind them of what Jehovah has done in the past.
We wouldn't take the word of a serial killer or abuser that they're going to change their ways in future much less the word of a PR team who profit from them. No, we judge what a person is likely to do in the future from what they have already done in the past.
God's past is recorded in detail, we have his crime sheet and a record of all his past offences. Why believe his lawyers now?