The FHM (For Him Magazine) sites are using AdSense and are clearly violating the ToS.
The rules on this site were already strict when posting pictures in those threads.
So, it's either a double standard by Google or something else is going on.
Do they? I had a look and deactivated my uBlock but couldn't find any ads serviced by Google AdSense. They have ads that come from DoubleClick which is owned by Google but is a separate service from AdSense. Think of DoubleClick as the premium version of a free anti-virus, or really just about any type of software. The premium is, of course, better, but comes at a "price".
In this case, DoubleClick requires the website to meet certain conditions and also needs a professional (or team of professionals) to properly set it up. Thunderfall could poke at it himself but the primary purpose of DoubleClick is to maximize ad revenue which
needs an in-depth analysis of the site and how certain ads do on certain sections of the forum. I'm also not sure if DoubleClick has eligibility requirements for forums as it seems to focus on large publishers which I don't think CFC qualifies as.
DoubleClick has the functionality I referred to in a previous post: you can block certain ads and decide what gets shown on a case-by-case basis. You also gain access to advertisers who don't operate through AdSense and may have less restrictions about NSFW content than their algorithmic counterparts. AdSense is operated almost entirely through the use of filters and algorithms, with human eyes being a distant and often forgotten aspect of the review process. It can take literal years before your site comes up for review, and an appeals process if you get burned can take a similar amount of time. Having CFC get barred from showing AdSense ads would either require Thunderfall to find another ad service (which is rather difficult to feasibly do) or to appeal the decision which would result in probably a minimum of 6 months with no ad revenue for a website that has rather high upkeep costs.
I personally don't want to see the forum close up shop or start relying on a donation model simply because someone was a little enthusiastic about their physical tastes in the opposite/same sex and CFC just happened to trip the filter one too many times or found itself at the front of the line for a human review.