Maybe not completely, but they have some responsibility, here in altcoin subforum is a post about the manager needmoney, who has a lot of ICOs under his administration and there are several people in that post accusing him of being a scammer, I don't know what to think about it, because I haven't dealt with him directly, but I think he should be more careful with his reputation, since people put their trust, time and effort in their ICOs because it was supposedly recommended.