Video games also have potential legal advantages over IQ tests for companies. You could argue that "we only hire people good at video games to get people who fit our corporate culture of liking video games" but that argument doesn't work as well for IQ tests.
yet again an original post title that self-sneers
I read this as:「These feeble minds cannot possibly measure my intelligence ! It's over 9000 !」
This «I am very smart» lad must've received a disappointing score, which I suspect explain a great deal of his rant, humblebrag and all.
That or it is indeed satire (although too much effort as gone into the author's blog, that if is satire it's more sad than funny).