Really, you desire for risk?
No one
desires risk but aviation is inherently risky, so some level of risk always exists. The pertinent question in Risk Management is "how much risk are you prepared to accept?" or in other words "What's your appetite for risk?"
Ergo, "Risk Appetite". Not a daft management speak phrase at all, just new(ish) to the military and probably why it's derided. I remember that many laughed at "Air Power" in about 1995! But even the RAF has to catch up with the real world sometimes.