Slowly dying in no man's land vs. a chance to make it out alive makes it a fairly tempting risk to take. I can totally understand the Ukrainians trying such stunts with their wounded when the alternative wouldn't be a medivac chopper, but watching them perish in agony through the spotter drones. Even if was a 50/50 chance to crash and or be intercepted I don't think many wounded soldiers would hesitate at a chance to fly to an aide station or even proper surgical care in minutes instead of hours, days, or more likely never. Acute pain and the expectation to die otherwise shift the risk tolerance completely.