The safety concern is the reason as to how a safety margin of at least 3100 ft (6610 ft LDA – wet factor) was used up.
This is not to say that operators have to explain normal variability in operation (although this information is valuable in FOQA, etc), but operators must be prepared to explain how a full safety margin and an additional 12 ft happens to be used in circumstances, as known so far, were without failure.
There is a line in the sand (a fine and often indeterminate line) when ‘normal’ becomes an incident. It appears that this operation crossed this line in just the same way that others have done so, some with much more severe outcomes.
It is not the outcome that is important; it is the crossing of the line and the reasons why.
LULU. Look into the reasons why, Understand the issues, Learn from them, Utilise the knowledge gained.