Bitcoin created first or Binance exchange created first? and if I remember correctly, binance has only been around since 2017 and before that we also had many other centralized exchanges. All of them have a lifespan and are always replaced by other exchanges from time to time. So there is no reason that when binance dies the cryptocurrency will also disappear, but if bitcoin dies there is a high probability that the market and exchanges will be gone.
Binance or tether or any other company or project is just a part of this market, so without them there would be another product to replace them.
Exchanges come and go but we can not deny that if Binance collapse like FTX, its impact should be bigger because they are a bigger exchange than FTX. Their chain, Binance Smart Chain is bigger than Solana too.
Unless their report -
Our Commitment To Transparency - is cooked, their finance management is good and healthy. According to this, they did not use customer money inappropriately and did not take too high risk like FTX.
Tether is a biggest stable coin and its impact (if it collapse) would be bigger than UST impact in May 2020.
Whatever happen with Binance and USDT in future, I am sure governments will launch more laws and execute more strictly regulations on cryptocurrency and blockchain. For future, it is good, not bad.