You might not have noticed that essentially the entire blog post was AI written.

There's even this bit where they discover a remarkable trick:

> Each round trip to the database has a cost. For carts with multiple line items, we batch reservation queries using UNION ALL so we fetch all needed units in one round trip

Insights like that really don't read like senior level output, and of course, it's LLM output. I'm not sure it's presumptuous to question it.