Although it is stated in other words. One of the statements in this article is that:
Soon external signals (e.g., links) will not be used for relevance of the organic search results.This is nonsense. Recent research learned that Links are still relevant. Even Gary Illyes states that RankBrain is something different as suggested in the article above.
Lemme try one last time: Rankbrain lets us understand queries better. No affect on crawling nor indexing or replace anything in ranking
— Gary Illyes (@methode) March 18, 2016I think it is better to believe the latest.