I completely disagree.
Ive played skyrim on console since the game was released and logged hundreds of hours on it until about two months ago when I built my first custom PC just to play games like SKyrim,Oblivion,Fallout series etc.Vanilla Skyrim is a cake walk compared to a modded SKyrim.
With the likes of combat overhauls like "Duel" and "Deadly Combat" that make vanilla enemy AI seem broken and impossible to play because the AI is so dumb.
Mods like frostfall where you actually can die from the harsh weather if you dont dress appropriate in certain parts of the world and make you think twice before you start swimming in water surrounded by ice.
I can go on and on with the immersion mods that make the game 10x harder then vanilla game.After playing both ways i could never go back to Vanilla skyrim on console or PC.A modded skyrim is built for the real rpg player that wants a challenge thats unique to himselfor herself.Sure you can go all out God status if you want but you can easily go the exact opposite and make it one of the most challenging games youll ever play.
Either way though if you are enjoying the game thats all the matters no matter how you play.As original as that sounds its true.