One doesn't invalidate the other. Some conspiracy theories are fun and amusing to read about, but they're just theories with no evidence or just circumstantial. Of course, speculating on the possibility of something existing or happening (Like ET life) is not the same as affirming that it did happen/exist as an irrevocable fact.
Whoever fights monsters should see to it that in the process he does not become a monster. And if you gaze long enough into an abyss, the abyss will gaze back into you
