> Their audience has always been, and will always be application developers who prefer to do nothing low-level. How did they forget this?

to this:

Their audience has always been, and will always be application developers who prefer to do nothing except to build their main product.

> Our primary DX is a CLI. One of our defining features is hardware isolation. To use us, you have to manage Dockerfiles. Have you had the experience of teaching hundreds of Heroku refugees how to maintain a Dockerfile? We have had that experience. Have you ever successfully explained the distinction between "automated" Postgres and "managed" Postgres? We have not.

I'm pretty much sure an application developer in this day and age has to know all of them, yes. Just like git.