1.) A mole won't clearly self-identify in their second post.
2.) Most trolls would know DU has zero tolerance for contrary opinions and other clear thought. Only those hoping for an insta-ban would make themselves that obvious, that quickly.
Based on those premises, I think there's at least an even chance that these "obvious" and "concern" trolls may in fact be DU koolaid-drinkers' sock puppets angling to make discussion of SHREW-related concerns totally off-limits on DU by hyper-sensitizing jurors and PTBs to such matters.