You don't see that someone might read the title and infer there's a current outbreak of Covid-19 in Antarctica? The title seems like deliberate clickbait without a year.
Nobody's saying that, the point is seeing this title is very different knowing that it's from 1973 rather than the present day.
This is Hacker News after all, it's important to know what is and isn't current events because without a date, it's kinda assumed that it is a current event.