(off topic) The code chunks in the article use a ligature font, so ">=" is rendered in a way that makes you stop to think how to type it - which is especially confusing since the context is not exactly math. Down with ligatures and extra cognitive load!
Some people love this, and hunt for the perfect ligature overloaded programming font. Fira Codes popularity is often credited to its tons of ligatures.
I hate it too.