If your definition of the “in-group” is “people who might be open to heeding the warnings of 1/3rd of all living US Surgeons-General on topics of their health”

If your definition of the “in-group” is “people who might be open to heeding the warnings of 1/3rd of all living US Surgeons-General on topics of their health” then yeah, I can see why that might not clarify anything for you.