The mods we have do great work and this is in no way intended as criticism. But I think the frequency of new content on this site outweighs the frequency of moderation work due to there being too few moderators.
It could be a timezone issue, or it could be sheer bad luck when things fly under the radar for both (?) of the active mods.
Here, the user Yung has posted two answers in an attempt to reply to other answers. I flagged them as "hey, delete this" 5 days ago, but they're still up.
Of course, this can easily happen if moderators go on vacation, have busy days, or for a plethora of reasons. And I'm NOT criticizing anyone. But if I'm not mistaken, we only have 1 or 2 active moderators, and it's summertime. It's not a far stretch to assume that there will be moderation downtime.
So yeah, this is not a criticism of the quality of work, but rather the quantity of workers. We could use one or two more, I think.