Broadly speaking, I agree with TxNVSue2023.
To be a Christian, there is no need to know when Armageddon is coming. In fact, Jesus made it clear we would NOT know and should not expect to. It's one of many things the Org has got all messed up for decades, and even now when they claim they are no longer looking for dates, the evidence of their talks and behaviour (for example the Lett comments about being in the final hours of the final day of the last days) show otherwise.
They are still unnecessarily feeding the rank and file's view that Armageddon is "just around the corner" and that is why they should not give up now, not stop, etc. Rather than emphasise that whether Armageddon comes in "my" or "your" lifetime or not, living according to God's standards is intrinsically worthwhile in itself - not that we are working to an end date. That almost guarantees you are setting people up for disappointment and disillusionment.
He will decide who will & will not be part of the new world.
Again, absolutely right, and this has always been the case, whether humans (including the JW org) have chosen to recognise it or not. It's a self-evident truth that if Armageddon and the coming new world are in God's power, and the power over life and death are also, then the one who determines who lives or dies is Him (and whoever he chooses to give that power to - His Son).
For anyone to say this one dies or that one lives ahead of that is simply arrogance and assuming auithority that doesn't belong to them. It;s one thing to say that individual should live by the standards laid out in the Bible and even to caution that God warns us about the choices we make, but no human can determine the exact outcome of another, Just because the Org now claims it will stop being presumptuous in this matter doesn't change what every JW should already know based on Scripture.
However, I do agree with and understand the passion of members countering TxNVSue2023's points with the fact that the Org HAS claimed to know, or at least to insert itself in as the sole source of divine authority on these subjects, and because of that many JWs have been misled into listening to men rather than God when making plans for their lives around what job to take, whether to marry, have children, move to another land to live, and so on.
As a result, there is a huge legacy of disappointment and bitterness which has nothing to do with what God and Scripture says, but everything to do with the interpretations of men, and in this case, a small group of men in Brooklyn.