There are not only a large number of counterfeit money, but also many ICO projects are false. This is difficult to eliminate. We can only participate more cautiously.
It would be really easy to make a fake coin. Mesh networks and testnet's would be something that would sort of work as a fake coin.
Yeah you are right and that is the reason that many people now do not believe in cryptocurrency because they have been scammed and all their money has been looted. Now it is hard to pull them again toward crypto market. It is because of the counterfeit currency and fake ICO projects. I tis better to skip these currencies and project.