> Your terraform written by a person already doesn't have deterministic precision

Can you expand on that? Because it sure seems to me like it is in fact deterministic unless the person deliberately made it otherwise

If i give you a task to write terraform or any code, you won't write what I write, you probably won't even write the same thing twice. You can introduce a bug too, we're not perfect. The output of the task "write some terraform" already isn't deterministic when dealing with people.