To be fair, I’ve worked with controllers who become explosive at the slightest increase in traffic or wrongdoing and frankly they’re difficult to work with. Having to un-key clearances or mid transmission because they un-key and let off outbursts “fuck this … what the hell are they thinking …” and my personal favorite “NO NO NO STFU and let me speak!!”
So… while you’d expect some increase in urgency in one’s voice on frequency in a situation like that, I’d much rather control alongside someone who was able to remain calm cool and collected in a moment of adversity. Not necessarily saying that was the case here but just an observation from experience.
I’ve also worked and witnessed many incidents: whether that be crashes, loss of life scenarios, incursions, etc, where I or the controller handling the situation remained perfectly calm/monotone in the aftermath. So tone on freq shouldn’t immediately be a red flag.
*devil’s advocate*