Not to downplay these criticisms or to imply that Python isn't a great choice for many of these requirements, but the things you've mentioned of Go's compiler a

Not to downplay these criticisms or to imply that Python isn't a great choice for many of these requirements, but the things you've mentioned of Go's compiler and garbage collectors are (as I understand the intent of the language designers) simply the current stating of being and I believe are both known (and planned) targets for future improvement.