Short answer: Yes, Digambar muni typically do not bathe in the usual sense. Their ascetic code emphasizes extreme simplicity and detachment from bodily comforts, which includes minimizing or avoiding regular baths. They may perform very brief cleansing (hands/feet) and rely on dry cleanliness, but they do not engage in ordinary bathing as part of their vows. There are differences between Digambara and Śvetāmbara practices, but both stress ahimsa, simplicity, and keeping the body free from unnecessary comforts. For specifics, you can read more here and here