I'm not really sure who this is for. It seems quite complex and opaque, for anyone who is well versed in AWS infrastructure I think you'll spend more time untangling this tool and trying to extend it beyond the exact use cases the author thought of than it would take you to set an app up yourself using your preferred config management toolchain.
For anyone not very familiar with AWS infrastructure, this is a very direct path to being in way over your head with a bunch of infrastructure you have no idea how to manage once it's set up. You'd surely be better off using a more managed setup like Heroku, or taking the time to read some AWS tutorials and set up only the things that you need, making sure you understand the different pieces along the way.
It makes me think of the Standards XKCD [0], I'm sure this project started out with good intentions thinking that "working with AWS SDKs is too complex, we'll make a few simplified make command to rule them all" but all they've managed to do is make yet another, extremely limited, but still opaque and complex tool.
[0] https://xkcd.com/927/