The only bad thing, is a thing that hurts someone. The word “someone” includes not just all sapient beings [self-conscious beings, i.e., Persons], but also the broader class, all sentient beings [not self-conscious beings, i.e., most animals & many plants & even some fungi].
One of the most important elements of Dragon Ethics is this “Highest Regard for All Life” exhibited via the actions & comportment of the Dragon Ethnician.