ICO mania is over. This is actually a good thing for crypto because there will be no more money grab ICO's (raising $40m to write a 7 lines code or something). ICOs will have to set their cap up to $10m otherwise noone will want to invest.
Not sure the "mania" is over, September was the biggest month yet and we still don't know OCT numbers - we do know Bitcoin hasn't slowed.