Is it wrong for a gentile to hang a mezuzah by their front door?
Is it wrong for a Jewish person to give a mezuzah to one of their gentile friends?
It's all about precedents.
https://reformjudaism.org/beliefs-practices/lifecycle-rituals/what-mezuzah-why-and-how-do-we-use-it
https://www.myjewishlearning.com/article/ask-the-expert-can-a-non-jew-hang-a-mezuzah-on-their-doorpost/
It doesn't take that many years for new species to evolve.
The whole world was different prior to the flood.
Imagine if the Rocky Mountain range was covered with water for nearly a year.
Things were different after the flood than they were before the flood.
So what is the significance of unleavened bread?