Listing a personal preference, contrary to recommending this measure for others, is a right every member, from normal member to Admin, has.
Each member adds to their profile information they choose to share. "None" could be a deliberate choice, it does not mean they make a statement "an AV is useless", that is a conclusion you may or may not draw. Quite aside, there is absolutely no way to know if the profile information is actually up to date.
when you are an appointed and predominant BC Moderator, responsible for advising members on security matters and correcting infections etc.,
A Moderator role has nothing to do with security advice/malware removal. See here for a description of all staff groups.
"Now faith is the substance of things hoped for, the evidence of things not seen."
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Malware analyst @ Emsisoft