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I kinda refuse to call them decentralized exchanges hence i made an edit and took out dex. They are more of noncustodial exchanges. Also it give more volume to them but not much if it works like a stablecoin. If it works aka you deposit bitcoins on that exchanges and then Bitgo
issues tokens than it might be something.
If you have to go to bitgo site to create the bitcoin tokens it won't get that much traction...

I get the reason why but it really not big news. Plus they could of just pulled a bitshares ;)
Just do what bitshares exchanges do? Give them a bticoin deposit address and then issue them a token. Boom bitcoin on their exchange.

But again could be just me 🤷‍♂️