It's up to the government and police to prosecute criminals.
The press can pick and choose to an extent, which is their right, they can't go after every criminal.
They're a business and know that going after the likes of Brand is good business.
People like Brand choose their targets, so does the media.
From the clips I've seen, of his post-accusation claims, it's just outrageous bluster without a shred of proof ...
... 'the media and state are colluding together to bring him down' ffs
Why would they want to do that, he's basically just a nutter on the internet, talking to other nutters on the internet. He's not exactly a threat to the government, just endless waffle without ever presenting proveable facts.