Why do these social media do not like cryptocurrencies? The first is Facebook, then Twitter, and now the Medium, they have all taken drastic measures to limit the publication of ICO content articles.
Because they care about their platform, lets take this thing to consider. How if that ICO we promote turn out as a scam project ? how if that ICO stole all your invested money and run away, they help promoting even just as a hosting. So they want to prevent bad thing happend by not even let any ICO get promoted at their platform. But this is only my opinion, you still can see a official ICO medium page though even the bounty campaign related channel at that project being suspended.