This is pure refactoring, right? afair safe() is just a wrapper around safe_load() now.

You mean load() is just a wrapper?

And no, if you read at link in the message above it clearly states:

Since load cannot break backward compatibility to call safe_load, the maintainers of PyYAML decided to simply deprecate the plain usage of load, and require that the user intentionally declare the Loader they desired.

and

FullLoader: Loads the full YAML language. Avoids arbitrary code execution. This is currently (PyYAML 5.1) the default loader called by yaml.load(input) (after issuing the warning).

while safe_load() use the SafeLoader.

My memory failed me then. 👀