The company noted that ad-limiting controls will possibly show you fewer ads from mentioned categories if the toggles are turned off, but won’t possibly filter out all ads. Reddit justified this by saying it uses manual tagging and machine learning to label ads, so there is a chance that it is not 100% accurate.

Because of course they use manual tagging, so that Huffman can get in there and make sure that people see what he wants them to, even if they don’t.