This is why I've become a fan of StrictYAML [0]. Of course it is not supported by many projects, but at least you are given the option to dispense with all the unnecessary features and their associated pitfalls in the context of your own projects.

Most notably it only offers three base types (scalar string, array, object) and moves the work of parsing values to stronger types (such as int8 or boolean) to your codebase where you tend to wrap values parsed from YAML into other types anyway.

Less surprises and headaches, but very niche, unfortunately.

[0] https://hitchdev.com/strictyaml/