I didn't read up anything on Ocelot, I played MGS1 many times & MGS2 even more times, only MGS3 & 4 i played once, and PW i kinda skipped most of the boring conversations.
I knew Ocelot was double agent in 1, triple in 3, the rest is pretty straight forward you can't miss it unless you had other people play the button smashing parts for you... IMO that MGS1 torturing part was one of the hardest smashing scene even on higher difficulties.
You underestimated my insights on the series, i'm just not very good with Big Boss's storyline coz i find it boring like watching a 60's flick. And who doesn't know most of the story post MGS2 was just fillers to keep the series going. It's different from some stories where the writer actually though about the prequels when he wrote the "sequels". You'd never know The End might be blood related to Big Boss.
Which is none.