I don't think they were annoyed by the follow-up, they were annoyed by being softly accused of an inaccurate story and not being given the benefit of the doubt. Removing the "I don't think the story adds up." and changing the period of "This doesn't sound like 'a small game studio in Oklahoma'." to a question mark would've have helped make it less accusatory.
In my opinion the original story was a bit misleading though, reading as if the small game company's novel IP was the original Medal of Honor, so I do think the follow-up was warranted:
"They took that momentum and started on their own novel IP as a quake licensee. They made a ahem mildly successful game named Medal of Honor."
I also think the response to the questioning was a lot more hostile than it needed to be but ultimately that there was rudeness on both sides
In my opinion the original story was a bit misleading though, reading as if the small game company's novel IP was the original Medal of Honor, so I do think the follow-up was warranted: "They took that momentum and started on their own novel IP as a quake licensee. They made a ahem mildly successful game named Medal of Honor."
I also think the response to the questioning was a lot more hostile than it needed to be but ultimately that there was rudeness on both sides