If 'at the top' means 'capable of being better at Go than any other entity in the known universe', that statement is correct. It can be viewed as the adaptatio

If 'at the top' means 'capable of being better at Go than any other entity in the known universe', that statement is correct. It can be viewed as the adaptation of a great competitor -- if a superior adversary emerges, a great competitor finds another way to win. The rest of the article is worth the read for context. This excerpt alone didn't capture the full spirit of the article.