The report attributes blame to the crew (quite reasonably), but makes no mention of organisational failings, company culture or policies.
With the Captain having flown 205 hours in 60 days, it is not unreasonable to expect some level of fatigue, particularly when conducting short-haul operations in the tropics.
Lion Air appears to have emerged from this without any change to their operating policies or practices (the Chief Pilot memo is surely a joke). This is not their first hull loss, and in view of the foregoing, is unlikely to be their last.