> where your standard pc will have thousands of cores

Thousands of non-GPU cores, intended to run normal tasks? I doubt it.

Thousands of special purpose cores running different programs like managing power, managing networks, managing RGB lighting around? Maybe, but that doesn't really benefit from this.

Thousands of cores including GPU cores? What you're talking about in labelling locality isn't sufficient to address this problem, and isn't really even a significant step towards its solution.