I would figure the same reason someone spends many years just posting about every slip, misstep, imperfect business plan, shoulda, woulda, coulda, but at the same time don't really care about the companies in question.
Just run them into the ground without offering any of the sage advice to help.
Just as I don't know why someone would do the above, but do, I would only throw the other out there as another inane possibility.
Mike