Boomers grew up in a time when being PC was reserved for preachers and maiden aunts.
"ret*d" was synonymous with "ignorant", "clueless", "misinformed", and "mistaken".
"Spaz" was synonymous with "clumsy", "uncoordinated", and a general lack of physical grace.
"Queer" was synonymous with "weak", "skinny", "smart", "bookish" and a general lack of interest in sports.
Back then, these words were in common usage by just about everyone, and were little more than just labels.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.