Why would I tell people who are correct that they are wrong?
I'll leave that to the intellectually dishonest on this board.
You said that the word means the same today as it did in 1700, if this is true then it didn't mean 'lack of belief'. This is a fact.
You are so convinced you are right because you really don't know very much. Sometimes you see others as 'intellectually dishonest' simply because you yourself are intellectually inadequate.
From The Presumption of Athiesm (1984) by Anthony Flew:
The word 'atheism', however, has in this contention to be construed unusually.
Whereas nowadays the usual meaning of 'atheist' in English is 'someone who asserts that there is no such being as God', I want the word to be understood not positively but negatively. I want the originally Greek prefix 'a' to be read in the same way in 'atheist' as it customarily is read in such other Greco-English words as 'amoral', 'atypical', and 'asymmetrical'. In this interpretation an atheist becomes: not someone who positively asserts the non-existence of God; but someone who is simply not a theist. Let us, for future ready reference, introduce the labels 'positive atheist' for the former and 'negative atheist' for the latter.
The introduction of this new interpretation of the word 'atheism' may appear to be a piece of perverse Humpty-Dumptyism, going arbitrarily against established common usage. 'Whyever', it could be asked, 'don't you make it not the presumption of atheism but the presumption of agnosticism?' It is too soon to attempt a full answer to this challenge and this suggestion.
My justification for introducing the notion of negative atheism will be found in the whole development of the present chapter. Then in Chapter Two I intend to argue for a return to the original usage of the word 'agnosticism', as first introduced by Thomas Henry Huxley. In the meantime it should be sufficient to point out that, following the present degenerate usage, an agnostic is one who, having entertained the proposition that God exists, now claims not to know either that it is or that it is not true. To be in this ordinary sense an agnostic you have already to have conceded that there is, and that you have, a legitimate concept of God; such that, whether or not this concept does in fact have application, it theoretically could. But the atheist in my peculiar interpretation, unlike the atheist in the usual sense, has not as yet and as such conceded even this.
Anyway, take it or leave it.