It's also an assumption that the pilot of the craft is from the same species that manufactured it. Perhaps the technology was gifted to them by a superior civil

It's also an assumption that the pilot of the craft is from the same species that manufactured it. Perhaps the technology was gifted to them by a superior civilization, or maybe they stole it, or maybe they're a genetically engineered descendant of an advanced species that died off millions of years ago without recalling its probes with their hibernating pilots.