Probably Kagi is using candidates as "chatgpt" answers on what they want to further work on for free. I have already suspect this kind of shenigans 2 years ago and stopped my Kagi subscription. As for adverts on positions, ghost jobs likely. That is the current trends. As for Jose, don't be surprised say 3 years from now they contact you. Some companies pool potential candidates like backup boyfriends. I usually just flat out ban this kind of companies and actively spread these companies to my circle to avoid. The lost is really on these companies without further access to specific job pool (and even customers) and of course bad evangelism on their part for decades to come even if they have changed.