Let's say "Runway melts" is X and Y is "temperatures in the UK near 40". "X as Y" says that these two things are happening at the same time. That makes sense. "

Let's say "Runway melts" is X and Y is "temperatures in the UK near 40". "X as Y" says that these two things are happening at the same time. That makes sense. "X has Y" is incoherent. I think this matters because some people on hackernews are not native English users. They may be legitimately confused or misled by typos that a native speaker would unconsciously correct.