Very true, bts will go up when people create bitUSD, as more bts will be put away.

We already see this happening on allot of major chinese exchanges who are using the bitCNY

I think the biggest reason some exchanges use usdt, is because its allot easier for them, they can just change numbers and create usd for themselves.

Thats kind of a problem with centralized exchanges in general tho, hence why i love the bts decentralized exchange.