I see it as a theological-organizational problem. The Watchtower emphasizes the group and its leaders. The New Testament does too. But the Watchtower abandoned emphasis on personal relationship with and personal responsibility to God and Christ.
So they are dependent on a group of seven men whom they've crafted into a 'second mediator' between God and humans. They thank the Governing Body for spiritual food. They should be pointing to God instead. They say to follow the Governing Body's instructions, but they should be telling us to follow Jesus' word and example.
They misdirect spiritual inquiry by a falsely built authority structure.