Earlier quoted context omitted.
How many major bugs in software and especially cryptosystems went undisclosed for decades? The core issue is the inherent asymmetry where 1 person finding 1 bug can destabilize giant systems. Even if these systems where hundreds of years old that doesn’t actually mean much.
By this logic most e-commerce is a mistake as well, since a serious flaw in the linux kernel could take down most web servers.
With smart contracts the liability upside is orders of magnitude higher.