Witnesses in general are quite selfish, partly the result of a constant background of warnings by the WTS (as Blondie showed) about giving money to charities that will only waste it. People pick up on those nuances and realise that, if the WTS disapproves of charities, they may as well keep the money to themselves.
The WTS pushes this line about the new system solving everything, which means:
(a) Even if your money helps some people now, they're only going to die soon anyway at Armageddon;
(b) You don't need to bother your conscience about people suffering because God can see them and is doing nothing abut it and in a way they're just collatoral damage in the battle between God and the Devil and after Armageddon no one willl ever think about them again; and
(c) The way to really help people is go witnessing more and to get them to become JWs so they'll survive Armageddon.