Comparing "God-of-the-gaps" to the UAP/UFO Phenomenon only makes sense if there is abundant, first-hand evidence for God that goes back several generations at least, is seen in numerous, opposing human-cultures and only can be ignored by debunking paradigms that vacillate wildly between a smug misunderstanding of pop-epistemology and the deeply, irrationally conspiratorial.
Actually, now that you mention it . . .