It is their choice, not ours, because they have been used to the HYIPs already, that is why they didn't want to change their tactics and ways on how they are earning bitcoins. The one that is legit to them is the scam ones, how ironic. That is why it is hard to persuade people like them to earn bigger amount of bitcoins. They are going to ask you where you are earning your bitcoins, and if you are going to say that you are earning it in this forum they are going to say "Is that an HYIP site?", typical people.