Whenever I encounter a rhetorical question in a headline or link, I assume the author is either going to reach some foregone and facile answer, or no answer at all.
In this sense, questions as headlines are not only linkbait; they're often the signs of worthless articles, usually consisting of regurgitated common sense, or else poorly distilled coverage of superior source material.
There are occasional exceptions, to be sure. But generally, if I can guess what answer an author is going to get to long before he gets there, he's wasting my time.
I often flag or downvote question-titles and "X ways you're..." self-helpy magazine headlines. As you say, it's an almost perfect indicator of bad writing.
In this sense, questions as headlines are not only linkbait; they're often the signs of worthless articles, usually consisting of regurgitated common sense, or else poorly distilled coverage of superior source material.
There are occasional exceptions, to be sure. But generally, if I can guess what answer an author is going to get to long before he gets there, he's wasting my time.