The nearest planet to earth with possibilities of intelligent life is for 500 human generations travelling at supersonic speeds to reach. The universe is so vast. There are galaxies just becoming visible after 4.5 billion light years earth has been around.
Notice that they are saying “non-human craft.” That leaves the door open to...
Interdimensional travelers
A race that has co-existed with us on earth with possible extraterrestrial origins
Craft piloted by AI of non-human origin
Extraterrestrials with the ability to travel at faster-than-light speeds
The list goes on.
Trying to pigeon hole UAP being piloted by extraterrestrial biological entities is foolish and short-sighted.