Two things I pondered….
Did the crew advise ATC that they had a problem? From one video it appears that the fire services were not standing by in close proximity, possibly as they had no prior warning and:
Was a visual inspection made of the suspect engine to see if there was fuel leaking prior to commencing the approach? An engine problem I was involved in on a 744 some years ago was initially identified by an increased fuel flow and the smell of fumes in the cabin. The fuel leak was clearly visible as a stream of vapour behind the engine. Even at night with the strobes flashing, a vapour trail would be easily seen.
We did shut the engine down as a result and the fuel leak stopped but we still had the firies nearby on landing, just in case.