The entire reason the kingdom funga exists is to eat waste. You may have heard that dead trees piled up for millions of years before fungi came along, whereafter they carved a new niche for themselves in the ecosystem and consumed the detritus. Life finds a way ;)
funga is the name of the kingdom, a recent change to align with the now-accepted designations flora and fauna (and of course bacteria and protista). Fungi is the plural when referring to organisms (i.e., instances), I am rather referring to the kingdom (i.e., the category).
Thanks for the clarification. It’s still sounding ugly, like if someone decided that the kingdom of mugroomz would include multiple mushrooms, but I guess it’s too late to complain