I mean, mrsk has a different feature set than ECS, sure. But we don't want to pay AWS for ECS anywhere. We're trying to get off big tech where we can. I'm sure you've heard David talk about that.
This tool covers our use cases so far, and is easy to reason about. Ergonomically, it's very similar to Capistrano, which we're all familiar with.
Makes sense if you're dropping all AWS dependencies. For us, ECS Anywhere with its logging to CloudWatch and automatic IAM credentials management allowed us to still use the rest of the AWS ecosystem on cheaper and more specialized hardware.
It wasn't too bad to setup GitHub actions -> AWS ECR -> AWS CodeDeploy -> AWS ECS -> On-prem hosts via ECS Anywhere and that's worked well.
Toss https://aws.amazon.com/ecs/anywhere on your own hardware and let someone else wake up at odd hours to worry about the container images making it on to the host.