I think that the mods have mostly stopped posting under regular sn now that they have real identities (e.g. 72, 99, etc). But that’s just a guess.
As for the enforcement, I think that they are sometimes inconsistent, though never selective. Meaning that everyone is treated equally, but sometimes the standards rise and fall. The decision is sometimes so subjective that it is impossible to enforce the stadards consistently.
As the saying goes, “You can’t be consistent all the time”.