This is the only criteria. It does not address whether you are moral, solvent, sick or well, nice to other people, a good family member, a contributor to the community, working a job that helps mankind in some way, or anything else in normal human endeavor.
Yes, and this is basically how all cults evaluate their members. In cults, there is an employer / employee relationship with a constantly running time clock. Members are either "on the clock", or "off the clock". The whole aim of the organizational operation is PRODUCTION.
The thrust of true Christianity is the building up of the individual's character - a transformation of their identity. Jesus expounded upon this with his teachings regarding the "salt of the earth", the "Good Samaritan", and his Sermon on the Mount. It was a focus on one's relationship with God; and how that relationship outwardly manifested itself with their dealings with others.
To the cults, this just isn't good enough.