All irrelevant to the comment: how 'pretty' the creek is, is not an ecological metric of merit. Its all about Ph, CO2, erosion and a hundred other things.
Keeping the planet livable and diverse is no more objective than keeping it plastic free. Ecology is by definition a human value, the universe doesn't care about CO2, biodiversity or erosion anymore than it cares about plastic bags.
(But sure, subjectively, plastic bags are a lesser concern, because they merely inconvenience us and trigger our empathy when a critter chokes on them, without directly threatening our own survival).
