Talking about scammers, I believe their are in every industry and crypto industry wouldn't be an exception. The only thing we can do now is to do our research not to fall victim of such scam, there are some good projects out there with some working product, let's try to find them and not blame anyone.
That is right, people are making the issue of scamming in cryptocurrency so big like this is the first time we will be having scammers in the world, and like you said, scammers are in every system, but there is always a way to actually deal with them which those other system that has the presence of scammers are being handled easily.
Cryptocurrency is a new system and gradually, as we grow in the system, we will be having series of ways to deal with the scam of which we are having some ways already, and one of the ways is just to do research in the project very well, and be sure that the project actually meets up to standard and that the project who should be an already established project should work according to what the developers have written in their whitepaper document concerning the project.