Have you read any his books. I bet no. The interesting fact is Some of his books are too populist and too revolutionary and get de-popularised in China.
ICOs are really different than Bitcoin exchanges. The latter one is very mature now and the gov't can actually trace the bills. When it comes to ICOs. there are just so many Ponzi games involved. Very few really new tech innovation coins are around. And it has already made a bunch of people lost their funds.
Banning ICO is really different than banning Bitcoin exchanges. ICOs have been used by a group of people to do Ponzi Schemes, and the Gov't got a lot of requests from various money-got-stolen investors.