With our current level of technology we have not lost a major airframe in the US since 2001. Yet these beings advanced enough to fly across interstellar space get to earth and suddenly can't keep their ships in the air?
I also encourage those who are very skeptical to think about how we as human would likely try to explore other star systems, in fact we already have started such projects. Our first step is to send a craft that with subliminal speed takes 100s of years, but even us we think about sending a craft with smaller probes inside it.
My point is those probes inside the transport craft, we would likely have a pretty high loss tolerance, so is it really that surprising they might crash sometimes?
Look, I'm beyond skeptical of the claims, but it's not because the spacecraft shouldn't crash. The most likely time to lose an airframe is on takeoff or landing, not in between, so why wouldn't the aliens have problems once they reach their destination?