Someone at the other thread said that if Kojima ever directed an actual movie it would've ended up being similar to Snyder's Sucker Punch, and honestly, there's some truth to it, considering his recent (well, not really) love for super softcore Penthouse photoshoots.
His best works as a writer are a borderline ripoff/homage of Blade Runner and Lethal Weapon in space. Personally, MGS has never worked for me on any level, be it story or gameplay (V has a great core gameplay, but some of its design makes me utterly bored). His writing was fine in the 90s because story almost always been an aftertought to the rest of the game, with adventure games and some RPGs being a small exception, but today, even though the overall quality of the writing could be better it also drastically improved compared to what we had in the past (can you imagine Wolfenstein: TNO or The Darkness in the early 90s following Carmack's comments?) and Kojima's flaws as a writer (be it crappy dialogue or copious amount of exposition etc.) are much more apperent compared to the polished scripts of some of his peers.
Still, it's undeniable that Kojima is a gifted designer and there're lots of interesingt ideas in his games, even if sometimes he can't execute these ideas properly.