So should we automatically believe every video that circulates online? Basic journalistic standards require verification of any source. As has already been pointed out, the article was updated with the relevant information once it was available and verified. This is common practice among every news source that publishes online.
Journalists have two options in the midst of a developing story. They can rely on rumor and instinct to publish whatever version of the story they think is the truth, and if they get it wrong, update the retraction later. Or they can wait until they have verified information, and report on only what they know. Frankly, I think there are too many sources out there who do the former, and too few who take the latter path.
You’re upset over basic journalistic standards and projecting them into something they’re not. There’s a reason that articles published online list the date/time of the most recent update, not just the time of publication.