I think one is to be harsh and as cruel as can be to someone that does not follow the indoctrination rules. Very bad people.
The other is what they say to internal people to legitimize their actions and force them away from people. To justify their actions and convince others not to talk to them - or they may find out why they left and leave themselves.
As a cult - you cannot allow cult members to every associate with those that leave and find out why.
Cowards.
Hypocrites.