In my opinion, both custodial and non-custodial accounts lose 5% each year due criminal attacks or mishandling. The problem is always people messing it up, but the reasoning and the mechanisms are different.
Luna, UST, and Anchor have just realized their nightmare. Because of a series of large liquidations and panic, the stablecoin UST has been sold so much that is has lost its pegged value. Luna, the native token of Terra, is meant to back the value of the UST stablecoin but has also last its value due to panic from the failure of the system.
USDC overtaking USDT (Tether) in circulating supply. This competition is good. It establishes legitimacy of demand and allows us to not be dependent on any single system. Soon the United States digital dollar will be on this list.