I think some devs wants to make some challenge at the game, but they fail and make the game boring.

Games are not to hard but they are frustrating for the wrong reasons. Take Black Ops for example, this game does not take a lot to complete on the hardest level but can become frustrating due to the woeful AI in the game. It seems many programmers make the game harder by messing the AI up rather than actually make it more tricky to play. You should die with less shots taken but also not get taken out by some enemy who is like a pin cushion. It's just laziness.

The only action adventure game that made me seriously frustrated was NGII for 360.  Everything else I've played is cake walk (DMC4,GoW, ME, etc.)

Where does it say "more difficult" other than the OP's translation?

Modern action games aren't that difficult if you're used to the control scheme and play them from start to finish in a short period of time.

They are pretty complex to newcomers though. Right of the bat you need to control movement with one hand while controlling the camera with the other. Just reverse up-down, left-right movement for the camera to see how a newcomer feels. Then you have fire primary, secondary, switch weapons, grenades, duck, jump, get in/out cover, sprint. All 2nd nature by now for most of us and thankfully mostly the same accross different games. Throw a command wheel on top of that, some special actions or sections where you are driving and shooting at the same time. Sure to frustrate anyone new to videogames. (Never mind they don't have a clue where x or y is when the game prompts you to press it, look at the controller and you're too late or dead)

I find it hard to come back to certain action games after a while too. Trying to figure out what everything did again.

NSMB is a lot easier to pick up and play, run, jump done.

Well, given that one of my gripes about gaming is that it's become too easy... I'm going to have to disagree with Miyamoto on this. Part of how I get entertained by a game is by having to think about it; this thinking about what to do is what lets me forget what's going on in the real world, and is where I can relax and have fun.

It makes better sense in the context of the whole quote.

hmm, I thought they're getting too easy, automatic checkpoints around every corner, regenerating health, and almost all boss fights are relying on enviromental tricks.

This needs to be in every page.

Hmm apparently Miyamoto sensei sees what I see too this makes me happy :) and here I thought It was just me.