Good point chook however that principle also applies to believers of any faith doesnt it ?
Though your right about religions that differentiate from mainstream religions and come under the banner of Cult.
Most Jw would take a bullet before renouncing faith
Or refuse a Blood transfusion to save their own life or the life of their Children or a Parent.
And apparently they also would suffer their children to Child sexual Abuse with a molester in their congregation and not reporting them to Police or Child protection Authorities so as not to bring reproach on Jehovahs name or his Organization ,the WTB&TS.
Keeping the faith is their main priority regardless of the consequences to their own family. ( sadly)