To not raise the status of the pointer-outer, we could require that the pointing out is done anonymously.

To make it formal, it might be useful to make it part of the UI: rather than posting a reply in free text, you would click a "bad language" button and mark a checkbox for the policy you consider violated. Reducing the bandwidth of the channel in this way might make it harder to communicate elaborate moves in a social-status game using it.

Not lowering the status of the pointed-out speaker seems harder: one could make the whole exchange not publicly visible, but would a private message be sufficient to enforce the guidelines, especially since there might be disagreement about what constitutes a violation?