The story is'nt shitty.
it's extra shitty. you don't have to defend it via the whole bla bla bla it's tongue in cheek or whatever. it's real real bad.
Honestly, I think only 1 and 3 have a chance of having their stories not be shitty. There were some silly elements but if you removed it, not that bad.
2 could possibly be saved if it weren't for execution
Jack: "Colonel, they're going to kill the hostages. I'm going in!"
Rose: "But you never spend any time with me bwaaaaaaaaaaaaa!!'
Still really silly but maybe it could be saved. Probably not.
There's no hope for 4 though.
And actually the Non-Boss sections of Peace Walker weren't that bad either. I did sorta like the idea of Big boss having to take down the memory of the mentor he killed (even if it was fantastical), I thought it was compelling. Then the ghost of his mentor took over a robot, started singing a Carpenter's song and drowned itself in the ocean.

Kojima!!!!!