They do seem untouchable. But not quite.
They were super annoyed with MM when she won and asked for them to give her some of their profits. The whole point of them writing these negative things about H&M is greed and profits, every penny that leaves the coffers grates. As another poster has pointed out, having people who can challenge, doing that, helps to set the narrative straight that this kind of behaviour is unacceptable. If this group wins, it can embolden more people not to take it lying down.
It's a big group this time, quite likely to win. Even the likes of Sienna Miller winning is adding up.
They make make fun of Harry, but from what I have seen, since he left, there are no outright lies that he cannot correct anymore.