I don't think that DeepOnion is a scam. I mean why would you think it is so? The 90% pre-mine is for all the airdrops to qualified members in bitcointalk.org and deeponion.org. There is nothing bad about that. Those with ICOs where you invest your BTC are most likely to scam. But with DeepOnion to scam? I don't think so. I trust DeepOnion.