They've got some short deadline to write a few thousand words on some topic they don't really understand and don't really care about, either... and the consequences for rushing out a just-good-enough article are pretty minimal.
Sound familiar? It reminds me of high school, and dashing off some crappy just-good-enough essay on the night before it was due. Journalists (or the vast majority thereof) are stuck in an endless loop of having to write two crappy high school essays on different subjects every day. I don't envy them.
The character limit on articles alone is enough to break the hopes of many people.