He has a massive following for a reason, but nothing he’s done has ever truly appealed to me, personally.

Spicy opinions incoming:

• His dialogue is absolutely atrocious; I’m not convinced he’s ever spoken with a real human.
• His plotting is cliche and convoluted, and there is literally no excuse for a 70+ minute cutscene in any game. I get the sense he’d much rather be making movies but found success in games so keeps making them instead.
• The only Kojima game I’ve genuinely enjoyed was the original MGS; a preference which made way more sense when I learned that it’s also the only game in the series where he didn’t have full control over the localisation and a third party took care to try and make his nonsense actually intelligible.

Upvoted because controversial. I have only played Policenauts.

Statements dreamed up by the utterly deranged

I’m not his fan, but that is too harsh. Metal Gear Solid series also has many strong entries, well received by critics and fans.

...he didn't even make a Silent Hill game.

I don't think you actually know what Kojima has made...

Wasn't he only involved with Silent Hills? Which was cancelled?

Karma doesn't seem to be a thing. Just number of posts and comments are displayed, no cumulative points from upvotes as far as I see.

Is karma even a thing on Lemmy? Anyone? No? Yes? Ok, it doesn't matter, I'll take the hit if I have to

No, it is not. Upvotes and downvotes mainly just impact post and comment sorting. Karma on platforms like Reddit was good in theory but, was heavily gamed by bad actors to fake perceived authenticity.