From my experience, by telling us ordinary folk Jesus is not our mediator, the Watchtower keeps us from a personal relationship with God. Misdirection.
Similarly by keeping us away from God's message, the unabridged gospel, the Watchtower keeps us blind, ignorant, subservient, passive, docile and captive. Suppression.
Because there is a conflict between our "authentic self" and "cult self" mental distress or "cognitive dissonance" arises. This in turn leads to all manner of behavioural and health issues. Oppression. Torture by proxy - hence hard to prove.
(Why do followers of the Watchtower religion call themselves “publishers of the Good News” whilst unfamiliar with the “Good News” according to Paul, Moses, Isaiah and Psalms?)