They have good and bad points, personally i’m of the opinion that if unlit the inside lane should revert to hard shoulder status during the hours of darkness, the overhead gantries could manage the operation of this.
Yes there should be better driving skills but that isn’t going to happen anytime soon as the vehicles and the job if anything are dumbed down ever further.
Comparing motorways with dual carriageways has always been mistaken, on duals you have laybys, short junctions, junctions that cross the carriageway ditto footpaths, farm and business entrances even private house entrances, the likelihood of finding pedestrians cyclists horses and agricultural equipment.