There’s no reason that bitcoin will be backed by USD as both have opposite currency feature. While USD is solely controlled by the government, bitcoin is never controlled by any third party except of its user or hodler. If ever the time comes that will be possible, maybe we are not talking anymore about bitcoin but USD in the form of its digital currency.
Yes I agree, Bitcoin runs on a different market than USD and we think they will continue to be at odds, considering that USD follows a government system and where Bitcoin runs on a decentralized market, it can be said that no one can control Bitcoin, and this is the Cryptocurrency market where Bitcoin is far superior in every way we know.