CTA by enforcing the ban on Dorje Shugden is creating bad news all around for Buddhism. Buddhism is then seen as divisive, one faction says A and another faction says B. I mean who would want to be part of faith whereby people are fighting and cannot agree as to what is the truth. Some people have left Buddhism for much much less.
So CTA is the enemy of Buddhism, destroying Buddhism from within. Splitting the Sangha, the lay buddhists within their community and along the lines of the Gelug faith, how much time wasted arguing, fighting over this issue, so much resources wasted, life wasted, people hurt mentally and physically. So much pain endured by people, so much samaya broken, so much negative karma created. CTA is creating the causes the dharma to end even faster.