[going hot]

or we'll have another tool to beat fundie Christians over the head with!

There are in fact some who really are not interested in new info or discoveries, intra or extra terrestrial. There are others, who are afraid, very afraid, of new discoveries causing their core beliefs to come crashing down around their ears.
Such has been the core of resistance to exploration and the development of new ideas for centuries.

[That Subliminal Kid]

I'm afraid I don't understand exactly how aliens would cause anyone's beliefs to come "crashing down". Maybe you'd like to elaborate.