For starters, Go is not even memory safe. That aside, there are many reasons to choose a different language, memory safety is only one of very many tradeoffs that you make when choosing your tooling. In Bun's example, extreme performance has been achieved which no comparable alternative provides. Neither performance nor memory safety are "better" or "worse" by themselves, it's a matter of which tradeoffs you choose.

Did you want to say (Rust) but felt compelled to list more?

Can Java, Python, Typescript, Elm, or Clojure even be consider memory safe since they are run on VMs or interpreters that might not be memory safe?