Juju is ~300k lines of code, and that doesn't count 3rd party libraries (it's also like 6 months out of date, so it's probably significantly more than that now)

Juju is ~300k lines of code, and that doesn't count 3rd party libraries (it's also like 6 months out of date, so it's probably significantly more than that now). There are many large Go projects out there - maybe you've heard of Docker or Kubernetes? Saying it's not for large systems is just showing ignorance of what it's already being used for.