You're the author of the blog post? Dunno if this is something you care about, but with JS turned off the code boxes are omitted (with no placeholders or other clues that something is missing.)
I am! It's something I care about, but not sure if there's something I can do about it. The code blocks are powered by a `<script>` tag from GitHub's Gists. Unfortunately, I don't have the ability to edit that post without Wordpress completely removing those tags (I don't have appropriate permissions). I can ask for them to put `<noscript>` tags, but don't know if that will really help.