Basically because they feel they are not being blessed.
This is not to say that all GB members feel this way. The power hungry ones love getting the whip out. The other members incorrectly look to the old testament for answers.
They are telling the sheep to be faithful, dedicated, self sacrificing, serving to the fullest, whole hearted and obedient. Most articles and videos are telling the sheep to give more. More of their time to field service, the building work, to study, reaching out, giving more money, not to have children and not to spend more than a couple of years in higher education