I think the reason why they only get 1% of crypto payment it's because most of their videos are free and they don't need to pay for the subscription because they can also find the video to other free sources.
Maybe in illegal child porno there are many anonymous user use crypto to buy illegal porn videos.
Anyway, this is my first time to heard this site CamSoda Porn live cam it looks like the same as nakedbitcoins.com but in the end they are not success with this business.