Most developers would scoff at their own code written a decade ago, because we learn constantly, it's what makes this profession great.

So unless you're one of those people who just are consistently great, maybe the secret identity of Fabrice Bellard, you may want to consider this before making immature statements like this.

Besides, inexcusable atrocities being picked up by large parts of the industry (hi javascript), are pretty common and one could bet that they afford much more learning and real world value than perfect academic solutions never used by anyone