Well, I can't stand YAML, because I had to spend half a year extending a far too complex Ansible codebase. It felt like they made a Turing-complete language out of what's supposed to be declarative. And it feels like a good chunk of that was enabled by YAML offering an enormous amount of features itself.
So, yeah, I mostly just prefer TOML, because it's less easily turned into a Turing-complete language.