Some contrived example where you might lose significant money because you made a generally good change but it had a bug and that bug was somehow missed by your entire review and testing process and the consequence of that bug was able to go unnoticed for a long time in production and then the result was disastrous isn't really a very compelling counter-argument.

If you subsequently hold weeks of post-mortems, meetings, process improvements and outright terminations, the person who made the otherwise useful change that had a bug should be among the last to get called out, somewhere after the entire management chain who utterly failed to competently organise critical development and operations activities, everyone responsible for QA who couldn't spot such a critical problem early, and everyone involved in the data science who ran such a hazardous experiment without taking better precautions around validity.