Well, HN includes the source site along with the title, so that context isn't really missing. At least it does for me. E.g., the line on the HN page appears as:

Well, HN includes the source site along with the title, so that context isn't really missing. At least it does for me. E.g., the line on the HN page appears as: > What the Apps That Bring Food to Your Door Mean for Delivery Workers (nybooks.com) But in any case, the idea that a headline ought to include all the context is a hopeless one.