I also think the US Securities and Exchange Commission (SEC) are running out of excuses not to approve this and the submissions that are done are covering all the legal requirements for a approval.
The only reason why it might not be approved, is if there are some political influence not supporting this. This is not a pseudo anonymous financial instrument, we are talking 100% regulated and centralized control and 100% KYC requirements.
Investors all over need to think about protecting themselves from inflation and authoritarians. The combination will rob people of their wealth even if it is "only" 2-5% per year. Global chaos and rampant printing money to fund insane schemes and military conflicts would only make it worse. PMs and bitcoin are two way to help protect oneself. And ETF holding "physical" bitcoin vs futures will make it easy for a lot of people to protect some of their money. Even if on average they only choose to protect a few percent, the numbers are huge.