It does stand to figure that if something can be created it can be destroyed but thetans must be tough little buggers because Xenu’s hydrogen bombs only dispersed them and the electronic ribbons only restrained them. Most implants emphasize the use of Clockwork Orange type videos and slide shows to instill ideas that cause the thetan to limit their own ability thus eventually degrading them into unconsciousness - ergo the BT problem. Naturally, many implants would use religious ideas because those were particularly effective at messing with a thetan’s head. LRH must have taken this last bit to heart because Scientology seems to function very much like the religious implants he describes. This all also ties in rather neatly with what he said about survival and valences, or in wog terms - stockholm syndrome.