Right, but if he had simply phrased the question as "high-ranking members of the State Department" (meaning 'not you'), it changes the whole tenor of the interaction. The reporter deliberately aims to make the spokesman as uncomfortable as possible for the purposes of making him look bad, and for avoiding the out of saying, "Like those people talk to me about concerns like that. Ask them." The reporter doesn't want to ask them, because this isn't their first rodeo and they'll deflect the question more effectively. It may also be that he doesn't have enough clout these days to get into that press conference, or ask a question.
Personally, I think 'gotcha' journalism like that changes fewer minds than it hardens in opposition. It's good content, if your intent is to get retweeted by people both agreeing with and opposing what they're seeing, monetize the content and show upper management a high engagement score. It's not good journalism. It's also not good for press-government relations, in the sense that the government should see opposition reporters as part of His Majesty's Loyal Opposition, rather than opponents in a game of cheap political theater. Hard questions, yes. Rig the game to get a desired emotional response, no.
To put it another way, Jon Stewart was right on Crossfire almost two decades ago. We're pushing political hack reporters like Begala and Tucker Carlson front and center these days, rather than treating them like the hacks they are. This guy's bio suggests he's not a hack, so he shouldn't act like one.