I’m looking at you, Slate, but you’re not the only offender.
Seems like 90% of the time, that “Why” can be removed, yielding a better headline that just as accurately sums up the article’s content. Most of these pieces are just asserting a point of view, not explaining why anything is so.
The “No, …” construction is more annoying. It sounds needlessly, unaccountably snotty and insulting. They might as well include a rolleyes smiley. I don’t need your attitude, Web editors.
Both of these headline habits may have seemed like a fresh, clever stylistic choice back in 2012 or whenever, but they’re now just irritating textual tics that need to be suppressed.