RPG Insanity

Every single game is too easy if you overgrind (unless it automatically scales enemies if they'd be too weak.

The real challenge starts when you try to beat the game at Lowest level possible without anything that would make journey easier. 

So:

Anyone who wants challenge from games should never grind and set game difficulty to hardest possible. In my opinion the game is as easy as you want it to be not the hardcore as Dark Souls series which was developed as a hard game by default.

There's not much truly hard games that KEMCO made (mostly older games if they don't have post-game stuff). 

Currently most games have easy story so someone new to Kemco won't get frustrated by difficulty. Want to have hard Kemco (EXE Create)  game? Simply start the game on Expert (or the hardest possible) difficulty and go straight to next parts of the story while ignoring chests or boosting stats in any way except normal level ups.

If I want to grind it's to see how ridiculous  the game goes by doing same repetitive things to make myself unstoppable (at least until I get wrecked).

Conclusion : Difficulty of the game depends solely on the player. Of course developers would make impossible fights if they want to but every player wants to complete the game somehow by using all ways provided by creators. Too hard Game can be a good opinion about it but too easy game can't be the reason to hate the game. Developers can't make game both super easy for the people who want to enjoy the story and hardcore people who want bosses and enemies to be more intelligent than the player.