I presume they mean that out in the real world, there are lots of edge cases where reversing a transaction is a better outcome than chest-thumping about "Code is Law".

That was a solved problem long before computers came about. If a transaction is wrong, don’t change it, add another that compensates for the error.

The real problem with crypto is that usually what is asked for is a ledger, and the crypto and distributed parts are just bloat.