It seems that the WTS is keen to ascribe certain bible prophecies to itself as having fullfilled them.
The 'trumpet blasts' in Revelation become district conventions (or announcements at the conventions) and they make a great commotion about other things they 'announced' such as "millions now living" or "advertise, advertise, advertise".
It seems though that they always miss a key bit out - what exactly the announcements were or what they were to advertise!
I am pretty sure that all the original messages and beliefs that these were based around have long since been abandoned but they still cling to the idea that their announcing something was somehow linked to bible prophecy and had Jehovah behind it.
Do they think the message doesn't matter, just that there was a message (just don't ask us what it was).
Or perhaps the message doesn't matter at all and the messenger is all important?
I doubt many JWs know what was in any of these announcements, just that they are a fullfillment of bible prophecy (because it says so in the proclaimers book).
I know one old announcement they made that is still true:
"Religion is a snare and a racket"
Perhaps the WT leaders didn't see this as a condemnation but rather a recommendation of a good business to be in?