like binance is doing with tether - they are "printing" fake casino money to inflate price of BTC using USDT (80 billions currently) - if anybody decide to create crypto market exchange and create for example USDA token (just like USDT alternative with also "covered" 1:1 to USD dollar) and print every day few millions of USDA - and then buy BTC to inflate price to 1'000'000 USD/BTC.
Is there any evidence of cooperation between tether and Binance to manipulate USDT prices? I don't think there is a link, it can be understood with the BUSD.
There are facts you should know:
USDT is backed by promises: There is no 1 USDT == 1 USD in bank, and therefore all that preserves its value is to continue to make promises that there is a real dollar for each USDT, and therefore you should avoid it if you want a stablecoin outside the platform.
USDT is used within the exchanges and this is only a small percentage (less than 10%) of the
real Bitcoins.