Actually, this post shows the most complete and utter misunderstanding of all things crypto that is humanly possible. Again: neither Bitcoin nor Ethereum nor any other major cryptocurrency has ever -- ever -- been subject to value erosion due to an increase in the underlying monetary supply, I.e. unregulated printing. Price fluctuations are due entirely to changes in demand, rather than supply.
Furthermore, no one has ever been defrauded of their crypto holdings unless they've already entrusted those holdings to a third party of some sort. Keep your keys in your own pocket, and you'll never need worry.