That's a tough one. Because the honest truth is that even if there are legitimate articles out there, like the one in The Guardian, once they do their own Google search the first things that'll pop on their screen will be apostate websites that quote the article. And so right there they will assume they you would only have ever come to your decision by visiting apostate websites and that, well intentioned as it may have been, your mind is now poisoned.
I suppose you COULD say that you originally read the article from its direct source because a family member sent it to you before the apostate sites got hold of it, and that it's been bugging you forever.