It will likely take the whole space down with it, not just Bitcoin, because what'll happen is on all USDT exchanges and insolvent USD exchanges, the price of crypto will reach millions of Tethers per coin as people try and flee, then on all real-dollar exchanges, the price will collapse to pennies as everyone tries to sell their crypto for actual people money that you can use to buy goods and services in the real world.
Think MtGOX on steroids.