I never heard of poetry before and normally use pipenv.
The author states that poetry is more popular than pipenv, is that true?
I did a quick comparison:
https://github.com/sdispater/poetry watchers: 77 stars: 4,690 forks: 318
https://github.com/pypa/pipenv watchers: 348 stars: 17,207 forks: 1,268
I don't know if the authors statement 'Most people seem to prefer Poetry.' is true.