Yes, it seems a bit immature and pedantic to bother over mechanical errors in the text. But such clear mistakes in the published text (e.g. "intuitive" when they meant "initiative") does not speak well to their credibility as a newsgathering organization.

Unfortunately it seems like there has been a general decay in how carefully published material is proofread, I find a surprising number of typos and mechanics problems in books as well. I've found Packt to be especially egregious in this regard, many of their books seem to have been written by a non-native speaker and then never proofread at all.

Edit: it also strikes me as a bit iffy to introduce George Knapp as a KLAS reporter without mentioning his extensive involvement in the UFO community including hosting Coast to Coast AM. Whether fair or not this would lead many people (including myself) to view his information as generally less credible.