Here you go, pick which you prefer to handle first:
https://bitcointalk.org/index.php?topic=5213922.220. You get to choose from off-topic posting from several members to dozens of ICO bumping accounts. Using the report to moderator tools seems to have been backfiring lately, especially reporting off-topic trolling or diversion.
If one or more reports went unhandled for a long time, it's either:
a) A bunch of moderators looked into the case no one was sure whether the report warranted action
b) The report requires in-depth understanding of the discussion, the situation at hand and /or access to data unavailable to regular moderators before an action is made.
Glancing over the title and posts of that thread, this seems to be scenario b). While I'm not implying that this is such a situation, when it comes to assessing accusations, quite often said accusations are based off of circumstancial, speculative and / or flimsy evidence. While different moderators might place the bar of required sophistication of evidence at slightly different heights, in quite a few cases the only ones who can (with reasonable certainty) confirm or deny the allegations are the admins since they have access over tools no one else on staff has (e.g. checking IPs) and in the case of theymos, the head admin, have the authority of the final word on everything related to Bitcointalk moderation.
You are indeed correct, this case is b). However, the evidence being adequate here is not the case and certainly not if you factor in OP's track record. Regarding the off-topic posts, the only thing that got deleted so far is my own on-topic post in which I criticize the lack of moderation too. Looks like lack of transparency has huge downsides, as only theymos and Cyrus can see who this was. Maybe it is time for some changes? You yourself could be oblivious to other moderators exercising extreme biases and misjudgements due to lack of this (as far as I know you can not see who handled the report either).