There's a bunch of activity ongoing to make things better for memory allocation/collection in Go. GreenTeaGC is one that has already landed, but there are others like the RuntimeFree experiment that aims at progressively reduce the amount of garbage generated by enabling safe reuse of heap allocations, as well as other plans to move more allocations to the stack.
Somehow concluding that "By killing Memory Arenas, Go effectively capped its performance ceiling" seems quite misguided.
Somehow concluding that "By killing Memory Arenas, Go effectively capped its performance ceiling" seems quite misguided.