AP Writers

So, I'm looking at this AP news release, and I find yet again common grammatical and spelling mistakes in publicly released information. It says, "Thousands have fled there homes in Nashville..." - that should be "their," not "there." That's a common mistake that thousands of English textbooks across the US have included in their (not there) "common mistakes" listings. I am curious, though, why these types of mistakes are made in formal publications (vs. informal communication, such as email or instant messaging). I mean, this author is, presumably, paid to write for a living, yet he can't seem to take the time to proofread a four-(short-)paragraph article.

Am I being overly critical here? Or perhaps a little AR or OC? Is it really too much to expect that JOURNALISTS would actually PROOF-READ their (not there) articles BEFORE publishing them?