I fail to see what leads you to believe this is a relevant point when discussing INI files as the alternative to YAML.
INI isn't specified, thus you cannot claim that the INI format does something a certain way.
The best shot at a specified INI file format might be TOML, and even that format is subjected to the same type of criticism.
I fail to see what leads you to believe this is a relevant point when discussing INI files as the alternative to YAML.