Don't know exactly, but a number of the adult websites did major clean-ups of their sites to remove all voyeur/candid material it looks like. Probably due to some legislation being passed that would legally expose them for hosting that material on their sites.
Yeah, there was a big story about it some time last year I believe. Pornhub basically had to remove all unverfied content from their site due to concerns about the age of models in videos.
XHamster basically did the same but to a lesser degree.
They weren't targeting candid stuff specifically but rather videos posted by unverified users. Unfortunately, as almost all candid content is posted by unverified users, it fell by the wayside along with a lot of amateur hardcore and pirated mainstream videos.
After changing its policies to ban unverified uploaders and Mastercard and Visa's decision to drop the platform entirely, Pornhub has removed millions of videos.
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