If you accept that stipulation as a condition of sale they can sure you for beach of contract. See Ford vs John Cena https://www.caranddriver.com/news/a21622751/the-flip-that-flopped-john-cena-and-ford-settle-gt-resale-lawsuit/

Elite: Dangerous and everything else by Frontier studios

If it purged the entire ecosystem what are the trout going to eat? Seems like they won’t stay unaffected for longer than it takes to starve.