Earlier quoted context omitted.
> I feel most decent engineers can get rehired elsewhere with 14 weeks of runway. Oh, sweet summer children and children of recession free economies for IT. If job openings fall to 10-20-30% of current ones and tens, hundreds of thousands of IT workers are fired, good luck getting hired quickly, when any of the few good remaining job opening has hundreds of good applicants. We'll be back to the days of: Sure, you can…
Can we please retire this "sweet summer child" thing? It is annoying af, rude, and likely never written by anyone over 30.
https://news.ycombinator.com/newsguidelines.html
Attacking the phrasing is not what we're looking for here at HN. The meaning of their comment is clear.