The problem is they delve too far into the fuzzy and misleading terms without a solid explanation. This is where things like 'The God particle' come from. "Average peope"[1] do not think in strictly defined an limited terms, the associate based on multiple meanings words have. They also allow certain connotations to evoke emotional responses. Of course being too clear evokes responses about patronizing... sigh.

[1] Average people being defined as those without strong scientific training, and therefore more likely to make inferences that may not be reasonable.