Usually articles are a lot longer and they bury such info deep, so checking the comments first if its even worth clicking on the article is normal, given the huge number of sensationalized headlines coupled with the attempt of the article writers to keep readers on their page for as long as possible instead of coming to the point right away.

The reading behavior of many is optimized for sifting through a large number of submitted headlines without wasting too much time, not for maximum enjoyment of any single one of them. The (I think reasonable) assumption is that many, maybe most, even of the initially interesting sounding headlines turn out not to be worth reading.