Most likely, this will turn out like so many reports: showing weaknesses and omissions both by individuals on Nov 12. 2022, and in how the management and direction of mass air displays have evolved over the decades. In that time, the number and variety of flying WW2 aircraft has increased, while their pilots and crews have changed. Even in the 80s, people who flew these aircraft in combat were in their 60s, fit to fly, and accounted for a good number of historic-airplane pilots.
I do recall, however, talking in the 1990s to the boss of a USAF lab at Holloman, that specialized in oxygen-related safety issues (I think it had been set up after Apollo 1) and provided outreach and help to industry and government users. He said that a common response from a company/operation that had suffered an oxygen-fire accident was "but, we've done it that way for years". To which the investigators who reviewed the incident would respond: "Well, you were lucky all this time."
I keep remembering that line today,