Well, I, and many other MGS fans, do like these scenes. They are not like watching a bad B-Movie... they are fun, IMHO.
However, you do have a point that the general public may find the long cutscenes a bit.... tedious. Then again, MGS4 is a game for the fans so I don't expect it to have a wide appeal.
No foreign sky protected me,
No stranger's wing shielded my face.
I stand as witness to the common lot,
survivor of that time, that place.
- From 'Requiem' by Anna Akhmatova