People who are still investing and thinking that cloud mining and hyip's are one of the best way to steady income are newbies or else they really don't want to listen to the community and believe that all of those ponzi's are just a total scam. And with your suggestion of maintaining a site and earn from adnetworks is good but that is hard to do.
I agree, people that are still trusting hyips or ponzis are newbies in cryptocurrency. Or some of them are just lazy people who don't want to exert some efforts to earn money. They just want a passive income and just sit all day and watch tv or play games as long as they want. And wait for their earnings but that is impossible to happen. Successful people work hard to achieve what they want.