Have you that have faded noticed that any JWs you have the misfortune of running into do not bring up any "spiritual" subjects?
Just as island man said, deterring persistant spiritual association with the spiritually weak/sick is part of any cult's hygiene protocols.
Keeping the apostate "virus" from spreading to non-affected dubs is to avoid or keep to an absolute minimum any "spiritual" association with weak or DA/DF family or friends lest the thinking/feeling virus spread.