Very true. The website is not about apostolic succession which is supported by the Bible. It's just about the Bread of Life Discourse.Even if taking Communion somehow saved a person, Protestants do Communion too. So this is really a meaningless argument.
Would God allow anybody to turn bread and wine into his body and blood? Were there priest in the old testament that were only allowed to perform the sacfrices? - Yes. Those would be the some of the question for succession.