If someone said “humans suck, but nature is a perfectly beautiful creation 😍” what examples would you think of that show nature being (1) independent of humans and (2) brutal and grotesque?

Those wasps that reproduce by laying their eggs in other bugs and then when the eggs hatch they eat the other bug alive from the inside

that statement would be kind of nonsensical -- humans are inseparably part of nature. Saying "humans suck but nature is great" is (at worst) an ecofascist idea or (at best) internalizing the lie that "humans are evil by nature" when it's really just living under various hierarchies that emphasizes the worst parts of us.