A huge amount of people don't read past the headline. They will never read anything in the article, they only read the headline. This is why leaving key information out of the headlines (and frequently burying it far below the first sentence) is so damaging.

https://www.psu.edu/news/research/story/social-media-users-probably-wont-read-beyond-headline-researchers-say

https://www.patheos.com/blogs/nosacredcows/2018/09/study-confirms-most-people-share-articles-based-only-on-headlines/