I have seen many suspended medium accounts, the average account is about cryptocurrency.
however, I also have a medium account and its content is full of cryptocurrency, until now my account is still usable and safe with no problems at all, and also many other accounts.
so we can not conclude that account suspended because medium cryptocurrency, there must be other factors.
Medium published ban on ICO and cryptocurrency advertisments at the same tine as google. You've just missed it. So if you post about how good is blockchain technology and etc. you are perfectly fine. But if you post somethng like "buy this ICO token for 10x gains" your account will be suspended. The same thing may happen to you on YouTube nowadays.