It was already a well-known review point way before LLM's. Every book about code cleanliness has some point about "write WHY not WHAT when commenting code". It's a point everyone makes, because it's such an ubiquitous thing.
Of course the standard bad example is
// add 1 to a
a++;
While an IMHO good example would be when normally you wouldn't expect this addition, so you'd comment
// the flipDinkleWooptie method doesn't add one in this case
// because there is no wooptie register, so we manually
// add one here.
a++;
alt Hacker News
It was already a well-known review point way before LLM's. Every book about code cleanliness has some point about "write WHY not WHAT when commenting code". It's a point everyone makes, because it's such an ubiquitous thing.
Of course the standard bad example is
While an IMHO good example would be when normally you wouldn't expect this addition, so you'd comment