BS? Possibly, but who decides that? The Individual. Being skeptical is fine, and alot of people probably should be more skeptical, but their is a difference in being skeptical, and being dismissive, and to call it all 'BS' is being dismissive. Even the Bible speaks of inhabitants of the Heavens(I'm speaking from memory here, my Bible is in the other room, and I'm too lazy to go get it). It talks of a chariot from the sky, and how those who departed said 'chariot' looked.
BS? possible, but I will always believe that there is more than just us in the Universe, until I'm proven wrong, not just dismissed.
Please read my post #157.
The vast distances make space traveling aliens unlikely, however...
If you are no longer worried about distance for your traveling, visits are not only possible, but unavoidable.
Alien is the wrong word. They are closer to us than is comfortable.
BTW...
Are UFO’s advanced vehicles being tested? Some. Most.
Are we being visited by aliens? Depends on your definition of “alien.”
Are they dangerous to us? Self interest in one of the most powerful influences in the universes.