Question for the author from someone with no expertise in the field: how does Fil-C different from https://security.apple.com/blog/memory-integrity-enforcement/

Question for the author from someone with no expertise in the field: how does Fil-C different from https://security.apple.com/blog/memory-integrity-enforcement/ https://security.apple.com/blog/memory-integrity-enforcement...? I'm guessing the hardware of the latter is something that Fil-C doesn't necessarily rely on.