I suspect the pilots and ground crew save their energy to fight about the things they are likely to say over a radio and let the engineers do whatever they want with the rest.

Unstart is a lot less evocative than “flameout” as used in the Top Gun movie. Flameout sounds like the plane is on fire. Especially if garbled.

Meanwhile, if your righter pilot sounds like he said engine start while flying? That’s only gonna happen if the engine already shut down. So that’s only ambiguous until the pilot keeps talking, in which case you know he was able to restart the engine before losing consciousness, versus the end of that conversation.