I think Jeri's right. They've proved they are pretty skilled at what they do. If they say they can expose the identities of Zetas and its supporters, I imagine they can. They've taken on more sophisticated targets before now.

I think the incoherence is a by-product of the model - it's not a top-down organisation with a party line, but a pretty loose coalition of individuals and groups. I suspect in common with many people they have had enough of centralised and authoritarian models.