Maybe Greek and Latin vocabulary is just overextended at some point? I don’t really see the issue with Snap, Crackle and Pop. The potential confusion around Magic seems much greater, although when you consider the vastly more common opposite effect, where specific scientific terms become popular and quickly gain wholly different colloquial meanings, perhaps it doesn’t really matter in the grand scheme of things.

Perhaps Magic is even so ridiculous that it’s immune to co-option by charlatans. After all, they choose sciency words to lend an air of credibility. OTOH the perceived ridiculousness could also change rather quickly. It’s just the nature of language use…