In my opinion, bitcoin price will not be affected if the USDT price collapses, yes it maybe a little bit affected, but it won't have much effect. bitcoin and usdt are different currencies. from a different world too. less likely to be affected. but yes it maybe have a big effect on the price of bitcoin, for example the price of bitcoin will get higher if the usdt collapses. or more and more new investors are buying bitcoin because it is more suitable for investment. but yeah don't know, I can't predict.