As one of the Ultramagnetic MCs, Kool Keith's rhymes were already different from the rest: "Their rhymes are pathetic, they think they copacetic," as he said on 1988's "Ego Trippin'." Four LPs later, Kool Keith stepped out on his own, releasing 1996's Dr. Octagonecologyst, his concept album earning hyperbolic praise from all corners.
He was abstract and funny; surreal and explicitly pornographic. (I mean, check the title.) Pitchfork and ego trip both said that it was one of the best albums of the 1990s, the pinnacle of horrorcore.
But ever since, instead of being more pointed and assured, he's become just plain weird, spiraling into his own headspace. (Self-indulgent is a term that could apply here.) And so his albums keep coming, but no one cares anymore. Kool Keith probably never intended to be popular, but he also couldn't have wanted to be ignored.