Because he was going after ordinary people
Answering questions as to why he named the twitter footballer today, but not before John Hemming said
"When he sued twitter it was clear what he was doing. He was going after the ordinary people who have been gossiping about him on twitter. To prosecute someone for contempt of court is quite a serious step. It comes with an up to two year jail sentance."
"I have spoken to people of ordinary means who have received these injunctions. I have also spoken to people who faced jailing in secret hearings and who were subject to anonymity orders themselves. This is a really oppressive system.
"So on one side you have a footballer upset that people are gossiping about him and on the other side you have ordinary people facing the threats of a two year jail sentance. I think it is wrong that he has the power to do this, but at least if he is going to do this let him be held to account."
"Before he sued twitter there was no public interest in naming him. However, when his lawyers decided to go on a "search and destroy" against the ordinary people who gossip on twitter he had taken a step that should not be done anonymously."
"In Thailand they jail people for criticising the King and people here are up in arms. Here they threaten to jail people for criticising a footballer and the lawyers say I should not name the footballer."