speed runs, dog tag runs, hard mode runs, extreme mode runs, frog runs, no kill runs, no alert runs...MGS games are meant to be replayed over and over and over and over. They have extensive replay value. The only time anyone watches all the cutscenes in an MGS game is the first time. After that, it's quite normal to skip every scene on each subsequent replay.

The only people who EVER complain about cutscenes in an MGS game are people who only play them once and put them aside.
However, MGS4 is chock full of cutscenes. Skipping the cutscenes reveals just how barebones the actual game content post-chapter 2 is. Still the first MGS I have never sucessfully replayed. I should try a speed run some day.