I'm currently flying in the region, and yes the runways have improved but WBKK taxiways are unacceptable and would have been closed and repaired long ago in most other countries. You wouldn't drive a low slung car on some stretches.
Update: The B737 concerned has been moved away from the main terminal and is being worked on, up on jacks with the port engine removed. Not sure if it will fly again, damage looks pretty major and may be beyond economic repair if the aircraft is old and high time.