Lifeboat Ethics: the Case Against Helping the Poor

In the article “Lifeboat Ethics: the Case Against Helping the Poor” by Garrett Hardin, what do you think of Garrett Hardin’s argument and why? What are the strengths and/or weaknesses of it? What kind of ethics does he use?
https://www.garretthardinsociety.org/articles/art_lifeboat_ethics_case_against_helping_poor.html