I personally don't mind the multiple interview slots or 9 hours of conversations. It's fair since it takes their team members an equivalent amount of time (though it's split across team members, each team member is likely interviewing many others as well).

My blocker has been the initial written answers to the questions. I've had the questions half-answered for nearly a year now. I want to do it properly (sans AI) but other things come up and I question the EV of spending the time, especially since I'm not a strong writer in the first place※.

For Oxide, it makes sense to demand a strong writer due to their culture, so even if technically qualified I might not be a good fit, assuming I even get an interview.

※ - I write unambiguously, but use point form whenever possible and am not great at naturally writing concisely.