Just because someone is wrong about one thing doesn't automatically make them wrong on everything else. That's just an excuse to dismiss them.
What they're saying appears to be "we involved humans, we acknowledge humans can be biased, we will remove some human involvement going forward" which is very different than "we hid stories from sources we don't like."
Some conservative groups (and the author of this article, seemingly) would have you think they acknowledged that they did something wrong but I only see them stating the opposite.