Some interesting points.
It is easy to assume the SI was outrageous etc., but as I haven't seen it or the evidence against which it was prepared, I'm not sure I'm ready to assume the SI was crap and risky and those who prepared it were incompetent.
Maybe they knew it took hours to fully work loose and the onset was very easy to spot well before it became a problem hence the SI was OK?
Interesting that the US Army also thought the procedure fit for ops.