I think they meant more system technical risk than financial. as in, a change to prevent bypassing private key checks, or minting quadrillions of BTC / ETH beyond the issuance schedule.
Re:Smart contracts on Bitcoin
by Acrobatic_Road on Thursday January 14, 2021 @04:43PM
(#25783052)
If they didn't go forward with the DAO fork, I'm not sure Ethereum would even exist today.
that sounds awfully like the justification for bank bailouts.