C is also half a century old. Perhaps Valgrind wasn't a high priority because the newer language also has newer tools? Nothing wrong with adding tried and test

C is also half a century old. Perhaps Valgrind wasn't a high priority because the newer language also has newer tools? Nothing wrong with adding tried and tested tools later if people want them. Did you have a need for Valgrind in Go that wasn't served by any other tools until now?