It hearkens back to the days of primitive humans seeing the gods in rock formations, clouds, the moon, etc.... Then there are modern primitive humans who see Jesus in sweat stains, Mary in the glare of a building, and Elvis in a jelly donut.
In regards to whoever wrote the bulk of your post, the evidence that the human mind looks for (and finds!!) recognizable patterns in naturally occurring phenomena is so strong and so well documented that to declare those who express skepticism (of whatever degree) about life (past or present) on Mars as "Feebs" seem highly arrogant at best.