"Some people who initially appear to be in group X may turn out to actually be in group Y" does not, at all, require that all of group Y may appear to be in group X. Logic doesn't work that way :)
"Some people who initially appear to be in group X may turn out to actually be in group Y" does not, at all, require that all of group Y may appear to be in group X. Logic doesn't work that way :)