As a companion solution, there's also S3Empty https://pypi.org/project/s3empty/ which is a tiny CLI I wrote to handle more scenarios:

• emptying buckets with versioning enabled/disabled
• defining bucket names in a configuration file
• the configuration file can be a Jinja template with environment variables available as template variables
• allowing idempotence of multiple runs when the bucket might already be deleted
• logging progress as the objects and versions are being deleted After the S3 bucket is emptied, the bucket can then be deleted accordingly.

Hopefully that's handy for someone.