Created an overall rehauled and fail-safe implementation from all comments and suggestions:
# collect stats about the dir
- name: check directory exists
stat:
path: '{{ directory_path }}'
register: dir_to_delete
# delete directory if condition is true
- name: purge {{directory_path}}
file:
state: absent
path: '{{ directory_path }}'
when: dir_to_delete.stat.exists and dir_to_delete.stat.isdir
# create directory if deleted (or if it didn't exist at all)
- name: create directory again
file:
state: directory
path: '{{ directory_path }}'
when: dir_to_delete is defined or dir_to_delete.stat.exist == False