While I disagree with the author's opinion, it was very informative for me.
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But of course, that begs the question of whether language is defined by how people use it. :)
Using "begging the question" to mean something as obscure and unintuitive (as in, it's basically an idiom that must be explained first) as "your question originates from circular logic" is a waste of prime dictionary space.
This term should mean "there is a question that is so blindingly obvious regarding the situation at hand, that it simply begs to be asked" - so, more or less what everyone who didn't have the term explained to them, thinks it's supposed to mean.