It is completely embarrassing how many engineers we have and still apply manually from laptops. Changes are slow and error-prone, we don't even have them hooked up to CI/CD. I think it still works because we have so many damn engineers and we don't actually need to change infrastructure multiple times a day.

That said, Terraform breaks so often that if we did it all automated, we'd have a million more Git commits from trying to fix broken apply's.