I guess I see the use of [[controverial issue]] a bit differently. If either from experience here or elsewhere you know the issue is one on which there are passionate differences the link should be in the first paragraph, with information on the page [[controversial issue]] giving what ever aid we can to readers and writers.
This link would remain regardless of the current state of the article. For example [[Tibet]] is now rather vanilla but I know from experience that passionate and sharply divergent views exist.
Fred Bauder