Meta-comment: I really love the expanding explanation hyperlinks in this article. It's a much better alternative (imo) than say, linking in a new tab, or a pop-up, etc.
Me too, I found that aspect of the site design really cool. Just another perk of hand-made personal sites instead of things like medium.
I think it might be even more useful with a faint background color so you could skip ahead to the end of the parenthetical if you figured out what you wanted to a few words in. Overall really cool feature though, which I'm tempted to steal haha.
Whereas I didn't realize they were links, and never thought to click on the oddly worded text below the examples. For others like me, the plain text label in a square box below the listings that says stilted things like "The one on the left does" expands when clicked to give a useful explanatory paragraph. Seems like a good approach, but I could have used a better affordance: a cursor change on hover, underlined blue text, even maybe a tool tip that says "click me for the answer you idiot".