I’ve got these articles saved, about the history of brushed metal on Apple software: https://512pixels.net/2013/03/brushed-metal-intro/ https://512pixels.net/2016/11/the-brushed-metal-diaries-beyond-software/
To be honest I loved it … though maybe it has to do with the fact that I have a soft spot for 10.4 Tiger, due to personal (?!) reasons. After Tiger they started progressively tearing down the brushed metal components.
Python programmers appear to actively promote the ‘easier to ask forgiveness, than permission’ style nowadays. This article has a measured take: https://realpython.com/python-lbyl-vs-eafp/