Crypto-Bridge is a decentralized exchange built on top of the
BitShares Network, it's basically the same as
Bitshares asset exchange, but with many different trading pairs and is easier for coins to get listed.
The people who build crypto-bridge are the developers of Bridge Coin, they had no ICO and no premine....that right there is enough to call your accusations unfounded and unjust. Dude, do some research first before you just spout off claims of ponzi schemes and fraud.
They launched an altcoin and mined it themselves while building crypto-bridge, they offer staking positions to people who want to lock up their BCO with them in order to get a little bit of the trading profit that the exchange generates. That in turn gives the coin some demand and value, its actually an interesting model. The coin is pretty much tied to the exchange and if the exchange is successful the coin will be too.
The only thing I will say is that the DEX is slow and cumbersome, it's the trade off of using a DEX.