That interview process is just a bit pompous. In my experience, companies that try this "every single person in the company needs to sign off" sort of strategy

That interview process is just a bit pompous. In my experience, companies that try this "every single person in the company needs to sign off" sort of strategy are looking for pretty much any slipup or inconsistent answer to a question and will use that at any point to make a negative decision. It's also a glaring red flag that the team might be awful at making decisions. I once went through this at a different company, and after something like 6 stages, including the CTO and others with fancy titles, I was given an automated rejection. Apparently—after badgering someone for whom I had their email—someone in the chain didn't like that I gave kind of a vague answer to a question, and so that was it.