He's not in the US and it may have been legal. It's still astonishingly stupid. Apple was trying to defuse the situation and asked him to call of the pitchfork-wielding mob by communicating their point of view (an account he paid for was spamming reviews). They were willing to accept his somewhat dubious assertion ("I paid for someone's account, and gave them hardware, and sometimes borrowed that hardware again, but it's not me and I'm in no way responsible").

But instead of accepting this resolution allowing everyone to safe face he seemed to be drunk with the power of the solidarity he had gotten initially, or he just wanted to really win the argument. I don't know the motivation, but anyone could have told him that trying to blackmail Apple was not going to end well,