The nuance in your post is probably not appreciated, but it's 100% valid.
Said a different way, Why is anybody be "concerned" about UFOs and/or using the possibility of their existence as a reason for....anything at all within government?
If aliens are visiting us from off earth, the technological difference is so vast that there are no "precautions" in the world to take. They aren't gonna sway folks to vote one way or another. We aren't going to "catch up" and throw together a rudimentary planetary defense.
It's binary, either their cool with us or they aren't. Just don't F up the introductions.