Some just dont get the Source of the Problem!

SE never learned to make dynamic fights, to increase difficulty they just add AoE, field wide damage, debuffs ala burning or ONESHOTS...
Thats just cheap static programming artificial increasing difficult and doesnt make fun playing through!
The source are the game mechanics itself and not the content.
Look at new 2016 games and compare, its not hard to create better mechanics but they finally have to change combat system a bit - there is no other way!