I would argue effectiveness point.
It's certainly helpful, but has a tendency to go for very non idiomatic patterns (like using exceptions for control flow).
Plus, it has issues which I assume are the effect of reinforcement learning - it struggles with letting things crash and tends to silence things that should never fail silently.
> has a tendency to go for very non idiomatic patterns (like using exceptions for control flow).
It tends to always write Java even if it's Elixir. Usage rules help: https://hexdocs.pm/usage_rules/readme.html