I have not read every word of Walden Pond, but yes, 25 years ago at the Evergreen State College, we read Walden Pond and you are the first person that I have ever heard suggest that modern environmentalism has little or no connection to Thoreau. Thoreau is the absolte poster boy of environmentalism.
You can’t control what people say about your after your death. Mary Wollstonecraft is the poster girl of the Feminist movement. Do you think she would find anything in common with the likes of Andrea Dworkin? For a long time they thought Nietzsche was a proto-Nazi...