And it's true that the rotten wood was better than nothing. Nobody is suggesting that NT or Linux should somehow have been developed in Rust in the 1990s. But likewise we shouldn't resist renewal in newer, better materials.
That applies to compiler internals too. Plenty of trouble down there for C++, it's just that C++ programmers can more often be sent away by assuring them that what they did was UB and so LLVM is entitled to miscompile it whereas the Rust people keep arriving with the receipts, in the form of LLVM IR that is lowered to machine code which makes no sense
