What will you advise for them?
Not much you can do about it, you can create a site to alert people, but you should note that there are already many sites that warn people not to invest in the ponzi schemes and yet the number of people who invest in the schemes ponzi seems to increase
How can we all make this crypto community better?
Well, you can continue to warn people not to invest in ponzi schemes, even if the results are not good, one and another will listen to you and that is something.
I personally think scams like bitconnect event will bring negative trust in crypto space for a short time at least for this jan.
this does not bring negative trust to the bitcoin world. how many hyip sites are created every day and have you seen how many people lose money every day because the hyip X site stole money and closed the site? this is something that has years and many of these guys who invest in hyip sites make deposits in US dollars and not in bitcoins or altcoins. evil people buys weapons to exterminate people from poor villages in Africa. It's not the fault of the bitcoin, weapons or the American dollar. It's people's fault.