That would be logical. When we explore deep space we send automated probes like Voyager, not Earth humans behind the steering wheel of some giant ship. No reason to think aliens would be any different. There's also no reason to believe aliens would even be living organisms, at least in the sense of how we define it. If they've mastered intergalactic travel they've likely reached the singularity and abandoned biological vessels as well as all the unnecessary complications a fragile, inferior being like that requires.btw, I like the guy saying that UFOs can pull 700Gs in flight. Imagine a 200lb man briefly weighing 140,000 lbs. Humans tend to black out at around 7-8Gs IIRC. To me that says alien craft must be crewed by robots or by computers vs by living beings.