[zamadatix]

The problem is you need a term for "flying thing we saw but weren't able to identify and/or categorize" (which is certainly a legitimate need) but every time you start using it this will increasingly change meaning to "aliens and such are zooming around and <some power> doesn't want you to know" (completely regardless if it's factually true or not - nobody is going to want to use an alternative term someone sets aside for "crackpots" in either case) until it gets to the point people don't even associate the term with what it was created for again.