And also distinct from std::byte, which they are hoping will pick up aliasing properties of char, allowing use and also abuse of char* to be someday eliminated

And also distinct from std::byte, which they are hoping will pick up aliasing properties of char, allowing use and also abuse of char* to be someday eliminated from new code. std::byte does alias everything, but no operations are defined on it except copying (and, weirdly, bitwise operators).