Agreed- just a month ago I told my team to read https://www.joelonsoftware.com/2006/06/16/my-first-billg-rev... and note how Spolsky knew the details of his application (weird date issues in Excel and VB). If you want to be a senior engineer, you need to know where are the odd edge cases in your app. I don't want to be the only one on the team who remembers that stuff.
It has to be interpreted through modernity sometimes to account for changes but overall his stuff feels really solid