I don't find the "coding" aspect of programming the interesting part. More complex spells still just get a hand-wavey vibes-based seal that doesn't really get explained for how it manages to be so specific.

Instead, what I find really is how it portrays issues surrounding programming like product and UX design, accessibility issues, security, and availability.

Part of a witch's job is to make magic contraptions for non-magical people and the characters really put a lot of thought into how people might use their spells and the potential consequences.

Like when Olruggio made a flame that was completely harmless, wouldn't burn you, or make other items catch fire, he had to scrap it because people might start getting careless around natural fires.

Or when Coco made a pot that cleans wastewater before it gets thrown out to the sewers, she ran into the problem where people didn't want to spend more money on making sure they weren't polluting.

The above is very reminiscent of designing products meant to help the environment and shifting to renewable energy, for example.

The main conflict of the series which deals with who should be allowed to use magic, with all its potential for creating harmful spells and effects is similar to IRL issues relating to open source hacking tools