YAML is actually very complex, to the point that basically nobody implements the full YAML 1.2 spec from 2009 (https://matrix.yaml.info/), while 1.1 contains footguns like `country: fr` and `country: no` parsing issues.
Though I agree simple usage is good enough in practice, there are a lot of edge cases that can cause subtle bugs.
Though I agree simple usage is good enough in practice, there are a lot of edge cases that can cause subtle bugs.