Relevant to this question and discussion, here are a few recent papers that discuss the ethics of directed panspermia:
Oskari Sivula (2022) examines planetary seeding from a longtermist perspective in his article The Cosmic Significance of Directed Panspermia: Should Humanity Spread Life to Other Solar Systems? published in Utilitas:https://doi.org/10.1017/S095382082100042X
Gary O'Brien (2022) looks more careful into wild animal suffering and planetary seeding in his paper Directed Panspermia, Wild Animal Suffering, and the Ethics of World-Creation published in Journal of Applied Philosophy: https://onlinelibrary.wiley.com/doi/abs/10.1111/japp.12538
Relevant to this question and discussion, here are a few recent papers that discuss the ethics of directed panspermia: