I get the impression most of the legitimate ecopsychology courses are intended for psychology students who will use ecopsychology as a therapy method for treating their patients.
BTW: The woman who did the TEDx talk is in charge of the campus food garden at the university where she teaches. Apparently she uses growing food plants as a way to strengthen her students' human-nature bond. When you plant and tend the food that you eat, your connection to the natural processes becomes very explicit, especially if you're using natural/organic gardening methods. https://www.csun.edu/sustainability/erica-wohldmann and https://spiritplantmedicine.com/dr-erica-wohldmann/