Human Intelligence is an Illusion

[Angrboda]

I fail to see how determinism would necessarily undermine the meaning of either intelligence or self identity. A fulcrum and lever can accomplish things that can't be accomplished without them. The lack of free will doesn't negate any capacity to accomplish things in either case. And I think you are making unwarranted assumptions about what it means to be a self. Identifying self with consciousness has long been known to be a problematic idea. Without our memories and our, possibly deterministic, nature, our consciousness doesn't serve as a foundation for the self at all.