maybe I read this differently than I should, but I am thinking there is a mis-communication regarding the non reproducible crashes.
If my guess is correct there 'non reproducible crashes' are those such that
there is not series of 'in game steps' that will consistently cause a crash
which is not to say that they won't happen if the input was identical
if a game always crashed at ex Boss battle foo, then it is reproducible with ingame steps
if a game randomly crashes, then they cannot tell you exactly what to do to consistently crash.
I read RachelB's answers as if you have a recording of the input that causes a crash, it will be consistent & reproducible
but without a recording of the inputs, it is almost certainly impossible for you to reproduce exactly the same set of inputs another time
If my guess is correct there 'non reproducible crashes' are those such that
there is not series of 'in game steps' that will consistently cause a crash
which is not to say that they won't happen if the input was identical
if a game always crashed at ex Boss battle foo, then it is reproducible with ingame steps
if a game randomly crashes, then they cannot tell you exactly what to do to consistently crash.
I read RachelB's answers as if you have a recording of the input that causes a crash, it will be consistent & reproducible
but without a recording of the inputs, it is almost certainly impossible for you to reproduce exactly the same set of inputs another time