This article is quite misleading as Alpha Girl did not pioneer any of these things and there is not an innovation taking place here; this is just a case of copy-pasting without even understanding the optimizations at play.

If you're a reader of this and read the last line, this is in fact not a great place to check out a contract. If you'd like to see a contract from the original developer that saves another 30% in gas because they understand the code, here you go: https://etherscan.io/address/0x3dc9c91cab92e5806250e2f5cabe711ad79296ea

The name of the original author is literally in your deployed contract (which you gave no credit for until it was brought to public attention: https://etherscan.io/address/0x8c5029957bf42c61d19a29075dc4e00b626e5022#contracts)