As I pointed out over a hundred posts ago in #921 you should be stabilised at 1000 feet in IMC. This means on glide, on speed and spooled up. If not it should be a mandatory go-around.
The crew seems to have got hot and high, and been way behind the aircraft. It seems amazing, but sadly all too likely, that they failed to notice the speed trend and of course the N1 values, never mind the Flight Mode Annunciation.
If this was meant to be an autoland then it also demonstrates the complacency that can be brought on by automation.
It just shows what is possible. But if this anything like what happened then it definitely goes on my '737 how not to do it' list.