If you actually read the article, you'd see it never said cats were from another planet 🤦♀️
They were likely African wildcats domesticated in the Middle East (disclosure: I am a cat lover).
Cats would be less of a problem to the environment if cat owners had always kept their cats indoors, and kept them spayed/neutered. This is not rocket science.
This is also something people have been acknowledging for years, e.g., the BBC article below is from 2013:
https://www.bbc.com/news/science-environment-21236690
https://gizmodo.com/8-species-driven-toward-extinction-by-cats-1848059691
Nice try.