Is it "safe" - yes. Even if Mutt's single incident were in fact a Hull Loss, a rate of 1 per 2 million FH is about half the overall acceptable accident rate, and therefore would likely not be of major concern. But it also clearly is not "as safe", since that one incident did, in fact, occur.
Like all the "lines in the sand" which form part of the underlying assumptions behind the regulations to which aircraft are built and then operated, as we get smarter about operating nearer to the lines on a routine basis there must be concern over degraded average margin of safety. That's one reason for there being an element of "regulatory creep", to stay ahead of (or not too far behind ...) the "design creep" that occurs.