There's a big difference between the HN crowd shouting "they should know the laws!" vs. licensed and controlled professionals like architects and structural engineers that "follow the law" via established codes, which have clear boundaries that can be evaluated and prosecuted when violated.

> When it's something seemingly egregious like this

You don't even know what "this" is. So the BI engineer that stitches together data for a report should have known that combining these two values was illegal? What silliness.