You can typically skip most dialogue and cut-scenes in the MGS games. Also quite a number of the cut-scenes are interactive and can actually help you in game play (codec numbers are show, clues etc).

MGS-4 though is has ridiculous cutscene length.

MGS4 would be like 10% shorter if you had a mod that just cut every line in a cutscene that’s someone repeating someone else’s previous line, but as a question.