History shows communist countries to feature state-imposed atheism. The precedent is already set.
Wikipedia is a user-edited encyclopedia that has pretty much been (since its inception) a tool for leftists. The footnotes of its articles bear that out. (The article is biased by citing Antony Flew as a primary source.)
He coined the terms "positive atheism" and "negative atheism" back in 1976...how could the article not cite him?
In any case, the fact remains that article in the OP doesn't make the quite valid distinction between positive and negative atheism...it lumps all atheists in the "positive" camp, and makes arguments that in no way apply to negative atheism.