> How do we know eliminating some of the complexities of current laws won't re-introduce some of the problems those complexities were trying to solve?

The other side of that coin is: are the bad outcomes produced by the current codebase bad enough that we will replace them and accept the risk of re-introducing the other bugs?

Alternatively, the entire codebase is in English (+/-) so one could document the bugs that changes are attempting to address.