You’re undermining your own point by pointing out that they were able to critically assess themselves, realize when something wasn’t working, and pivot to something that worked better, which is a normal part of the process and something that the best creative people are able to do.

Tweaking things like drop rates is also normal for games like this. The back-to-back changes were probably because they were unintentionally overcorrected (another very common thing that happens when dealing with the massive amounts of code game devs work with).