Does way more than that. Digger manages state on the backend and runs it. So it's a bit like "CI for your infrastructure". With versioning, rollbacks, etc. You can connect your infrastructure repository and Digger will export generated TF to it and also pick up overrides from it. So it's end-to-end flow.

You still need lots of DevOps knowledge to use Terraformer. None needed with Digger - you can ignore this part of your stack entirely, until you need to customise smth specifically. And then you actually can customize anything.