Interstellar travel makes no sense unless wormholes can be created and permit passage—way beyond current technology.
The proposed navigation system might help you figure out if you landed in our galaxy—if not you are permanently lost.
And wormholes are only a mathematical concept. Many mathematical concepts do not exist in the actual universe.
Voyages which would need to last thousands of years only make no sense to current humans, with current human lifespans and limited time horizons.
"That is not dead which can eternal lie,
And with strange aeons even death may die."