I’ve only started using yadm recently so I may not be able to elaborate in detail, but for me the main draw for using yadm (as opposed to Ansible, which I use at work) is the simplicity. It’s basically just a bash script that uses git, so there’s no dependencies besides git and tools installed on most Unix systems. Ansible felt like overkill for what I needed, ie just something to manage and sync my dotfiles.

Also, maybe it’s personal bias, but I really hate installing/using Python-based programs - they often tend to go wild with their dependencies and eventually break. I recall trying to install Ansible on a Raspberry Pi at some point (via pip) and it failed because one of the dependencies couldn’t be compiled for whatever reason. I gave up after trying to fix it for a while, and dropped the idea. I’ve had similar experiences with other large Python projects, there’s always some drama. Why is why I prefer compiled binaries or simple shell scripts like yadm.

I’ve no issues using Ansible at work though. We use it on RHEL so it’s quite stable and doesn’t have the dependency issues you’d get on a bleeding-edge, ever-changing, end-user system. Plus it really shines at the Infrastructure as Code stuff so we use it to automate everything from networking gear to VMs. But I feel it’s overkill for something as simple as syncing a bunch of text files.