Nicolau,
I don't know if you realize this but elderly JWs are the ones who contribute money to the religion and are most likely to leave their assets to the religion. And not all of them are poor pensioners either. In the U.S. many elderly people have the most disposable income.
This is not the case for people in mid-life or younger who are raising families and are struggling to get by. In my opinion, these people are the LEAST likely to put money in those boxes. Not only that, these people got burned most of all by the religion's anti-college and career stance. People like this are likely to be angry and resentful and angry and resentful people aren't contributing money. I know I wouldn't. So, if you are right they are making a big mistake.
But, as far as their 'new light' is concerned, they prefer younger people because they don't remember all the past prophecies and the presumptuous talk that went on. So, older people would threaten them more.
LHG