Of course. Only Adsense is authorized. After a short investigation, it appears that the main reason these NSFW-limit ads are shown is because the article includes direct link to the PixLab NSFW API Endpoint (https://pixlab.io/cmd?id=nsfw) which is basically a bridge to our ML model that let you detect whether an image or video frame contains adult, bloody or gore content.
Sorry if that came across like I was questioning that part of your process, I was more curious in the actual process, but it is neat that you guys already managed to figure that out!