Practically untrue and untrue don't mean the same thing. You could argue that they could be treated as if they mean the same thing (in some limited scope), but

Practically untrue and untrue don't mean the same thing. You could argue that they could be treated as if they mean the same thing (in some limited scope), but that is different to them meaning the same thing, and, since such an argument is not presented in the Wikipedia page (rather, a contrary position is presented by Russell in the second quotation on that page[0]) you would have to make that argument yourself. [0] He makes an explicit distinction between what he ought to call himself if being purely logical and what he practically is (an agnostic and an atheist, respectively).