The only cryptos that I would consider truly safe are those that are at present currently free while in development (because you can't lose anything by definition), and have a built-in global market waiting. Everything else is tulip-speculation frenzy involving you shoveling your money (degraded as it is) into electrons after the major gains have already been made, and requires either VPN-skulduggery and physical wallets (and being labeled a tax-dodger at some point), obtuse, fed-monitored exchanges (which send you yearly tax-withholding forms), or enslaving yourself to the same banking cartels already in existence (MasterCard, PayPal, etc).

For all we know, a restored USA republic could announce a new currency (called the dollar!) based on a basket of seized cabal assets plus national resources, and whose supply is blockchain based on GDP, with every proven American citizen issued a debit card containing an initial lump dividend. --Existing cryptos would crash as every hodler jammed the exits attempting to cash out.